
Therm-a-Rest - MondoKing™ 3D
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Last updated: Nov 17, 2025 Scoring
Glad you had success with it! I was super hyped about it from all the accounts of its comfort. Right now my “light” ground sleeping loadout is a klymit insulated paired with Nemo switchback (most comfortable combo I’ve found outside of self inflating) with tarp and bivvy. If I’m going less than 8 miles for an overnight and either the weather is extreme winter or I have a camping partner I haul my stupidly heavy mondo king pad and split the weight of the 3 man tent between us. Been leaning towards just going fully back to my hammmock but I think I’ve determined that I need an open cell/self inflating style pad to prevent hip pain on the ground.
r/Ultralight • UL comfortable sleeping pad for side sleepers? ->Game changer for us was setting up two Thermarest Mondoking XLs side by side in our tent. Sharing an inflatable mattress is not as fun as you think. Every time someone moves in the slightest the whole mattress moves. On top of that we do have a Kelty double wide sleeping bag.
r/CampingGear • Anyone here tried the Kingcamp air mattress? ->Two separate Thermarest Mondoking XLs side by side - different air pressures - no waterbed affect when one of us moves/rolls over. Kelty doublewide sleep system (bag).
r/camping • how do you sleep comfortably as a couple? ->We also have just two car camping pads side by side! Enough for snuggles without disturbing each other as much. We have Mondo King pads/mattresses. Not sure if they still make them but feel like they were less expensive than the Expeds seem. And option to still use it for a solo trip.
r/camping • how do you sleep comfortably as a couple? ->The Exped Megamat is insanely comfortable and keeps you REALLY well-insulated (R Value of 8.1, most cold weather pads are R-value of 5). Not to mention it will last decades before it needs to be replaced, and it's backed up by a lifetime warranty. All expensive sleeping pads are. Ive had both ThermaRest and Nemo send me free replacements when my pad developed a leak The Nemo Roamer is similar, as is the Thermarest Mondoking. But what makes me love the Exped Megamat is that the top layer feels like it stretches, sp the pad contours to your body like memory foam, just less thick https://www.outdoorgearlab.com/topics/camping-and-hiking/best-camping-mattress#an-exceptionally-comfortable-mat
r/CampingandHiking • Is an expensive sleeping pad worth it? My pool float beat the cheap ones. ->How much is it ? I have a mondoking xl that I never want to pay that much for again :)
r/camping • Anyone have experience with this sleeping pad? ->Yeah it’s been great. But car camping only really with it
r/camping • Anyone have experience with this sleeping pad? ->When I’m solo at a state park it’s nice to raise the sleeping pad up. I use a coleman packaway with a thermarest mondoking 3D for a great night sleep. When the SO and baby comes along we use a queen aerobed. Edit: am side sleeper
r/camping • Question about camping cots ->We use separate air mattresses so we can adjust how we want. Thermarest Mondoking. Expeds are nice too. I think both make double mattresses too if you want to go that route.
r/camping • Couples What do you sleep on? ->We sleep on two Mondo Thermarest pads strapped together. They’re 5” thick and wider than conventional Thermarests. Very stable and comfortable to sleep on.
r/camping • how do you sleep comfortably as a couple? ->XL rooftop tent. She sleeps on a Therma-Rest Mondo King mattress. I sleep on the built in pad in the RTT.
r/camping • how do you sleep comfortably as a couple? ->I'm partial to the Therma-Rest Mondo King.
r/camping • Is there a better sleeping pad than this? ->I have the MondoKing 3D. Love it, but it isn't the smallest.
r/camping • Big and Tall Recommendations for Sleeping Mat ->Comfort being your only concern and posting something that is not light in an ultralight forum, I'd recommend the MondoKing 3d by Thermarest. XXL comes in at 5lbs, 8oz. 7.0 R value usable year round. [MondoKing™ 3D | Car Camping Sleeping Pads | Therm-a-Rest® – Cascade Designs](https://cascadedesigns.com/products/mondoking-3d-sleeping-pad) Neoloft is only about 2lbs. But what's the point going light if you can have more comfort. Time to rename this forum r/ultracomfort.
r/Ultralight • Exped Megamat Ultra: talk me down ->I use Thermarest mondoking XL and camptime roll-a-cot. Inflatable + foam mattress is very comfortable and you can deflate it to your liking without the air mattress “sinking” to the middle feeling. The cot also has some give to it (also adjustable tension) and can even be slept directly on in hot weather. I usually put 2 bins under the middle. The cot is pretty light compared to most instant ones. Also I bring my usual pillow from home. I honestly sleep better camping. I’ve camped a few times below 0C and no noticeable cold coming through the mattress.
r/camping • Best, most "home in my own bed"-like sleep system? ->The foam wants to be its full size, which creates the self inflating effect and adds insulation. When you roll it up tightly to get the air out, you are compressing the foam. This also makes them heavier. My son has the exped megamat. I have the thermarest mondoking. Both are great. Comfy and warm. Let them decompress and add a few breaths to your liking, and close the valves.
r/camping • Is a self inflating sleeping pad better than an air mattress? ->Exped Megamat or Thermarest Mondoking. I have hip/shoulder issues too. These resolved that.
r/camping • Camping Cots ->I used this last year to buy my Thermarest MondoKing and My Exped MegaMat Queen. Thanks for the concerted and continued effort.
r/CampingGear • Sleeping Pad Comparison Table — UPDATED 2025 (reference to previous post) ->Thermarest Mondoking and the Exped Megamat (Queen). I'm the same age as you and slept 18 nights last yr on the Thermarest. Great sleeps. I picked up the Megamat this winter so I've only tried it for a few nights on the living room floor, but again, a great sleep.
r/camping • Need an old fart sleeping pad ->Exped and Thermarest MondKing. I have both, queen in the exped.
r/camping • What's the brand of the self-inflating mattresses that people swear by? ->I couldn't tell you personally. Never used the Lost Horizons, Featherstone, ALPS Outback Mat, Sea to Summit or Big Agnes Captain Comfort mats. Can't afford to buy all of them and test them =) I have used the Exped MegaMat 10 and 15, Nemo Roamer 3D, Thermarest Mondoking 3D and Stoic Cloud Lux mats and they are pretty close in comfort to the Exped. The Lost Horizon looks suspiciously close to the Stoic Cloud series. The Stoic Lux (which is the same thickness of the MegaMat 10) was fairly comfortable. No complaints.
r/CampingGear • Exped vs Lost Horizon sleeping mats ->We have thermarest mondokings. They’re huge and expensive but quiet and super comfortable.
r/camping • I'm looking for the quietest sleeping pad and cannot decide after DAYS of research ->Maybe try the mondoking XXL? It's a few inches longer (80 inches) so I think it's just a tad longer than the kingcamp you are looking at. It's also 30 inches wide so more room than the average. Im solo, and I'm not tall, but i like being able to roll around so I bought the XXL. It's super comfy. More comfortable than my bed at home. I highly recommend. It also has a great R value so you won't get that freezing effect you can get from some of those thick but hallow air mattresses (not saying the kingcamp is hallow... not familiar with it... but I use to freeze on my old thick hallow air matress).
r/CampingGear • Anyone here tried the Kingcamp air mattress? ->Oof. I thought i had replied but I must have forgot to hit the post button :/ was writing to say you may want to check out the mondoking XXL if height is a factor. It's 80 inches long so a few inches longer than the kingcamp you are checking out. Also the r value is really good on it. I sleep better on my mondoking XXL than I do on my bed at home. As the other poster said, you'd need 2, but as a woman, I was getting sick of sleeping poorly when camping and this air matress has made a huge difference for me. Your wife might also enjoy. (Plus, some stores have one inflated that you can try out before purchase).
r/CampingGear • Anyone here tried the Kingcamp air mattress? ->Mondo King was *the* purchase that transformed camping for us 10 years ago. We probably wouldn’t be such avid campers today if we hadn’t discovered it.
r/camping • Is there a better sleeping pad than this? ->Can't see r factor so hard to know. It looks similar to the Thermarest Modo king which was my big upgrade camping with a post-baby body (i.e. bad hips).
r/camping • Is there a better sleeping pad than this? ->OMG I couldn't agree more!! The investment has been well worth the return! :)
r/camping • Is there a better sleeping pad than this? ->The thermarest mondoking is the peak of self inflated mattresses
r/camping • What's the brand of the self-inflating mattresses that people swear by? ->I bought the Thermarest mondo king and have never looked back! It is very comfortable, big and has a high R value. As long as you are careful camping this thing rocks!
r/CampingGear • Absolute best sleeping mat? ->Thermarest totally changed the sleeping experience for me! I sleep on my Mondoking 3D XXL as well as at home
r/camping • Is there a better sleeping pad than this? ->Ok. I camp a lot and have different sleeping pads for different types of camping. My favorite types of sleeping pads are the “self inflating” ones. They don’t really self inflate all the way, but they do have an internal foam pad that draws air in as it expands from being rolled up. Once it’s laid flat, I give it some air (breath or little air pump) to make it super firm. The self-inflating pads usually run $100-150 with my favorites being the UST filimatic, Thermarest MondoKing and Exped MegaMat.
r/camping • Is there a better sleeping pad than this? ->My relative has this. She bought it for her and her bf and she loves it. I have the Exped Dura 8R for winter camping and told her to check the brand out and she sprang for this model. When I’m not solo camping on the ice I have a pair of similar pads by Thermarest called the Mondo King XL. They also pair great together for a couple. If you check the specs they are very similar, so I’d gauge packability, desired footprint dimensions, solo vs partner etc. You really can’t go wrong I love both Exped and Therma
r/CampingGear • MegaMat Duo Sleeping Mat - Medium, worth the hype? ->I just switched from expensive Thermarests over to these crazy cheap Night Cat hand pump pads and I am never going back to thermarest/self inflation. My arm goes dead without fail sleeping on the Thermarests and they take up nearly twice the room in my gear. The only benefit of the Thermarests I can see is that they are really tough, which could be great for some hardy adventures maybe. But nothing a couple patches can't fix IMO... So Choo choo I'm on the air pad train. These newer cheap designs are legitimately very good, they roll out crazy long and then shrink up. I probably can't share amazon links but "Night Cat Inflatable Sleeping Pads". There's a bunch of brands making this style now too, I'm not trying to spruik any particular brand, this was just the one that was affordable where I live.
r/camping • Self inflating vs air pad comfort ->I use Thermarest pads, have for years, I store them deflated and rolled up, the self inflating feature works fine for me but it takes a little time, just unroll them as soon as you get to the campsite and leave the valve open until you’re ready to sleep, it may need a little topping up by blowing but not much
r/camping • What's the brand of the self-inflating mattresses that people swear by? ->I have had to sleep on some pretty rocky spots before. Firstly, I would gather any fallen twigs leaves and foliage to try and even out the floor and take the edge off the sharp bits. Then ideally I’d put a CCF pad down before getting on a thermarest inflatable. But I have bivied directly on some hard rock platform with just a bivi bag and an uberlite between me and the ground. It was piles of dead leaves and thin branches that made the difference. Turned out okay. I was doing an ultralight fast packing trip and was in the middle of some nasty forestry tree plantation on a steep slope by the time the sun was going down. Decent spots were very rare so I ended up sleeping on top of an out cropped boulder.
r/wildcampingintheuk • What’s your go-to sleeping pad for rough or uneven ground? ->Both times I’ve hiked the PCT my thermarests have popped in the desert . The first time it was an older thermarest that had already seen a bit of action . The second time it was early on in my hike and it was the one I’d replaced the previous one with! After that I went CCF pad and was absolutely fine with it. In many ways, I prefer it.
r/PacificCrestTrail • Talk Me Out of Bringing a 1/8" foam pad AND my thermarest neo-air xlite ->For me the thermarest warranty has been worth its weight in gold, it’s an inflatable product that’s exposed to the elements, they’ll all get damaged eventually but every interaction I’ve had with them has been amazing, no questions asked replacement or repair
r/CampingandHiking • Is an expensive sleeping pad worth it? My pool float beat the cheap ones. ->Me and my husband sleep on an air mattress with seperate blankets and sleeping bags, before that we had two thermarest that aired up
r/camping • how do you sleep comfortably as a couple? ->Have you considered a camping cot? There are a lot of ultralight options now which are about the same price as a good sleeping pad for side sleepers. The only difference being is the weight, you’re looking at around 1.5kg for a cot bed which would be double the weight of a sleeping pad. For me, the extra weight is worth it for the comfort. For context I’ve tried Therm-a-Rest, Big Agnes and Nemo mats. If I’m going for comfort, the cot bed wins every time.
r/wildcampingintheuk • Best sleeping pads for side sleeping? ->For one year trip I would use something cheaper, more sturdy than ultralight. Thermarest often listed is great but £50 decathlon air mat is more sustainable, you'll have less stress. To increase R factor, you can add some CCF pad.
r/Ultralight • Ultralight sleeping mat recs? ->It's very simple if it blows up with air and inflates - at SOME point it's gonna get a hole in it. That's life! The whole air mattress thing started with Therm-a-rest's and they were pretty tough back then, now with everybody sporting hard-on's for "ultralight" gear its gonna get worse. Same goes for actual air mattress, you can sleep on them but if you're not in Texas or Arizona yer still gonna freeze your butt off. Here's why ....... People these days buy inflatable pads for the comfort, but you really need them for the insulative qualities they actually provide. Don't believe me go sleep on the actual ground one night. When you crawl in to your sleeping bag you actually crush the down or syntho fill in the bag so there is no insulation there under you and the cold even in summer can seep right in. You need a pad under you to keep you off the ground ..... the best ones for that are still the cheap blue ensolite foamy's you buy at the cheaper stores but yes, for comfort they suck. There is a yellow thicker brand called Zotefoams Evazote and they got up to an inch thick but I haven't seem them for years but they were good quality and tough and CAN'T deflate ! So ultimately if you want comfort you need to go buy a big chunk of open cell white foam four inches thick and 7 feet long like you see in hobby stores - mega comfy and the size of a house! But now you can't pack it anyway so you're back to the blow up pads - and that's it. You can go to stores and look at stuff like Futons and crap but they don't pack well ! Heck even Ikea makes a folding mattress but again good luck carrying it around, right? Pick one but they WILL get a hole in them at some point however you can try to limit that with a cot. I've used them for years and its nice. I'm gonna suggest a Cabella's Lounger Cot but they are $350 bloody bucks and the same goes a real camping pad, something like a Exped Megamat itself is $400 bucks by itself. The two cots I wanna get are gonna cost me $405 bucks so add in two decent pads like Expeds and they're $500 .... great huh? It's nuts at a thousand bucks! I actually might just go get some memory foam cut at an RV store and use that. They can't deflate and its about the same bloody price as these inflatable ones, granted it won't be near as packable and portable but both my Thermarest leak, both my Big Agnes pad leak, even the TWO Coleman air beds leak, you can't win. My tent is 210 sq feet and 10 feet tall so I don't need backpack-ability either ........
r/camping • Couples: what do you sleep on (NO air mattresses, I resent them so much) ->This comes up a lot. Search the sub for ‘mat’ for loads of replies. For me, thermarest, but I’ll break your budget unless you can get one second hand.
r/wildcampingintheuk • First camp this year last night, freezing! Mat recommendations? ->we each have a folding cot with a thermarest and a sleeping bag. we go car camping so it all fits in the back seat and the trunk. We also have (what they call) a seven person tent, but it fits our cots and a folding table comfortably, and we can stand up in it.
r/camping • how do you sleep comfortably as a couple? ->I did the PCT with just the thermarest and it was fine. I did the AZT with Thermarest and 1/8" foam pad and it was awesome. I slept much warmer and it was very nice to have the foam pad for breaks.
r/PacificCrestTrail • Talk Me Out of Bringing a 1/8" foam pad AND my thermarest neo-air xlite ->If you plan to sleep in shelters at all, you definitely want something under your pad to protect it from splinters and nails. My first thermarest popped in TN due to me raw dogging it in shelters. For my second pad, I got a sheet of tyvek and it made it all the way to Maine without any issues.
r/AppalachianTrail • I need sleeping pad advice/help ->Have you actually tried the Klymit? I’m pretty sure it’s up there with thermarest in terms of popular backpacking mats. I’ve always used thermarests. That Coleman mat looks like it’s made for car camping, not backpacking. You should be able to find the R-value of the Klymit pad on the packaging to find out if it’s insulated or not.
r/backpacking • Sleeping pad dilemma! ->Well if you need quality, comfort and light easy portable one… term a rest is just the best in the market. We use those for 20 years down here wile fly fishing in bariloche, patagonia Argentina. Good luck!👍
r/camping • Best air mattress? ->Cot and thermarest is boss. I use a folding wide, heavy duty woods cot. It’s heavy and has some bulk, but I’m usually near my truck or boat.
r/camping • Question about camping cots ->I’ve been using. Therma-rest for years. There might be better tech out there these days, but they’ve always served me well.
r/camping • Self inflating vs air pad comfort ->Yup. Those thick air mattresses are horrible to share with another person. I go with a good, solid cot with a thermarest for some padding and will never look back. For excursions where the cot is too bulky to bring along, the thermarest works fine.
r/camping • Recommendations to help with sleeping well while camping? ->We have a similar cot and thermarest. Very comfortable, and keeps us warm. We only camp in winter, early spring and fall.
r/camping • Question about camping cots ->Op zolder liggen 2 thermarest matten waar ik als kind nog op geslapen heb toen ik met m'n ouders kampeerde, 20-25 jaar geleden. Basic matjes, niet enorm dik maar tot ik m'n huidige (totaal niet compacte) tweepersoons van Redwood kocht altijd goed op geslapen.
r/BIFLNL • Wat is een goede zelfopblaasbare slaapmat? ->i used a cot camping a few times with a thermarest on top. pros: off the ground and good on my back. cons: arms hung over the sides and hurt in the morning, pillow kept sliding off, wobbled long ways (not side to side) a lot when i moved around. i recommend an extra wide one to help w the arms hanging off the sides or use a sleeping bag. in the end it was heavy and not worth it for me when camping
r/camping • Question about camping cots ->I have no complaints about my thermarest. I can even sleep on my side without hip pain. OK, well it is a little noisy.
r/WildernessBackpacking • How much better are “nice” sleeping pads? ->My thermarest is over 25 years old and I think had one leak that I patched. maybe?
r/Ultralight • My sleeping pads never seem to last more than a few months ->Excellent mattress! I used it with pleasure but then switched to the thermarest which is lighter and I feel great with it.
r/Ultralight • Sleeping mat reco for alternatives, or opinions on the S2S ether light XR? ->I haven't had a good night sleep until I started to use the Rapid SL. It has a good weight I think, the R rating is valid on it, only need higher for winter camping (for that i'm using the therm-o-rest, which is crazy good, except the shape, where i much prefer the rectangle shape of the Rapide with the raised sides, because I'm turning around a lot). To fit the pump you do need to be a bit aggressive with it but doable. Side note: a non fully inflatable pillow made a big difference for me to get comfy
r/CampingGear • Looking to improve my sleep, reduce weight and pack smaller by getting a new sleeping pad. Any help is appreciated ->I am twisting and turning around a lot even after I fell asleep and with the mummy shaped pad I often found myself halfway off the pad in the middle of the night.
r/CampingGear • Looking to improve my sleep, reduce weight and pack smaller by getting a new sleeping pad. Any help is appreciated ->I've had thermarest since their inception. Great product
r/camping • What's the brand of the self-inflating mattresses that people swear by? ->I havepunctured 2 thermarests on rocks pr thorns. I won’t be using them again.
r/bikepacking • Sleeping pad recs ->what brands? i only use thermarest bc they're the most reliable
r/Ultralight • My sleeping pads never seem to last more than a few months ->Nope, have had mine for 10 years, still noisy.
r/WildernessBackpacking • How much better are “nice” sleeping pads? ->Something like a Thermorest may be a good solution. They pack down small, are lightweight but robust, are an ok size and provide good ground insulation for those chilly Alpine nights
r/backpacking • How do I decide which sleeping pad is best? ->I like the one I have, it’s as old as I am
r/camping • Backpacking Sleeping Pad Recs ->I have one Exped and one Therm-a-rest in this style. At first, they’re great. Over time, the Exped began to leak, and I think the TaR is now doing the same. As best I can tell, the rubber lining inside the fabric begins to slowly degrade and develop pinhole leaks. You never hear leaking air. You just wake up in the morning with your hip touching the ground (I’m a side sleeper). I stored both fully extended, with the valves open, so keeping them compressed in the sack was not the problem.
r/CampingGear • MegaMat Duo Sleeping Mat - Medium, worth the hype? ->I have a neo air - cost a bomb when I got it about ten years ago. Definitely worth it - warm and comfy! Before that I "borrowed" my auntie's thermarest back in 2003 - that was a few years old then. I think I only made one repair.
r/camping • Backpacking Sleeping Pad Recs ->Yeah that is actually weird. When I bought my thermarest it was around 100 €, tough as nails, just under a kilo and I've never been cold on it even in sub freezing (the R-value is low though) But it seems the 100 € pad category has either gone extinct or prices have inflated.
r/bicycletouring • Sleeping pad recommendations ->I bought a thermarest. I do not believe in blow up mats because a pinhole means you wake up two hours later lying on the ground cold as fuck wishing you had bought something else, then spending an hour trying to find a way to warm up when you’ve already fucked that chance.
r/army • Best sleeping mat for the field? ->My gunner and I would stick a pair of stretchers in the back of our Bradley—quality sleep right there. (If you’re not blessed with being mech infantry—why let your ruck ride you when you can ride your ruck?—I always went thermarest)
r/army • Best sleeping mat for the field? ->I got my thermarest on ebay for a good price
r/Ultralight • save me from sleeping pad hell pls ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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