Therm-a-Rest - MondoKing™ 3D
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Last updated: Dec 7, 2025 Scoring
Liked most:
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"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 ... Also the r value is really good on it."
"I've never been cold on it even in sub freezing"
"keeps us warm ... We only camp in winter, early spring and fall."
3
0
"you can deflate it to your liking without the air mattress “sinking” to the middle feeling"
"Let them decompress and add a few breaths to your liking, and close the valves. ... You decide on the amount of give by how much extra you inflate it beyond what the foam can do itself."
"Once it’s laid flat, I give it some air (breath or little air pump) to make it super firm."
10
2
"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."
"Definitely worth it ... I think I only made one repair."
"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."
2
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"For me the thermarest warranty has been worth its weight in gold ... every interaction I’ve had with them has been amazing, no questions asked replacement or repair"
"Ive had both ThermaRest and Nemo send me free replacements when my pad developed a leak"
17
2
"It's super comfy. More comfortable than my bed at home. ... I sleep better on my mondoking XXL than I do on my bed at home. ... this air matress has made a huge difference for me."
"a great night sleep ... am side sleeper"
"I have hip/shoulder issues too. These resolved that."
Disliked most:
0
1
"I never want to pay that much for again :)"
2
5
"stupidly heavy mondo king pad"
"XXL comes in at 5lbs, 8oz."
"But car camping only really with it"
1
5
"I havepunctured 2 thermarests on rocks pr thorns. ... I won’t be using them again."
"Both times I’ve hiked the PCT my thermarests have popped in the desert . ... My first one had multiple holes and was a write-off."
"My first thermarest popped in TN due to me raw dogging it in shelters."
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"pillow kept sliding off"
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 ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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