Therm-a-Rest

MondoKing™ 3D

Therm-a-Rest MondoKing™ 3D

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TL;DR: Durable car camping comfort, adjustable firmness, but very bulky.

Overall

#10 in

Sleeping Pads

according to Reddit Icon Reddit

Sentiment score95% positive
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Top Pros

Top Cons

Last updated: Jul 2, 2026

Reddit Reviews

Reddit Iconblueberrypancake234
10 months ago

I ordered the Therm-a-Rest LuxuryMap Self-Inflating Foam Camping Sleeping Pad, Large - 25 x 77 Inches - from Amazon. It's warm and very comfortable. Very important to be insulating on the bottom, especially as temps start dropping.

Reddit IconBMThiker
9 months ago

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).

Reddit IconChannel-Separate
4 months ago

Megamat Ultra and the Thermarest Neoloft are comparables. Def not ultralight but I use the Thermarest on backpacking trips, not thru-hikes, and love it. I'm a big guy and the Thermarest is comparable to my MondoKing and Exped MegaMat Duo. The Ultra will work well for you.

6 months ago

Thermarest MondoKing, and if too big for storage go Thermarest Neoloft.

Reddit IconCozyTurtle55
9 months ago

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.

Reddit IconEconomyDramatic7937
5 months ago

I've used my thermarest Mondoking for YEARS. Even when I have a visitor they use it. It's expensive, but the best quality I've seen yet (I've gone through a few) it's so comfortable I look forward to camping and sleeping on it. Definitely not small, when deflated and rolled up it's the same size as my ten but 11/10 recommend for cozy comfy nights

5 months ago

I've used a 3P and a 4p with my bf. It was the perfect size for me in my msr elixer 3. My bf and I got the sea to summit version in a double for both of us to use and it had leaks within the first two weeks so I'm a big fan of how well my thermarest has been holding up

Reddit IconGrowitorganically
9 months ago

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.

Top Sleeping Pads on Reddit

1
Exped MegaMat Series

Exped

MegaMat Series

92% positive of 454 users

Car camping comfort champ, but some side sleepers find it thin.

2
Exped Ultra Series

Exped

Ultra Series

88% positive of 134 users

Lightweight side-sleeper comfort, but a bit pricey and bulky.

3
NEMO Tensor Series

NEMO

Tensor Series

74% positive of 394 users

Ultralight side-sleeper comfort, but slippery and prone to leaks.

4
Big Agnes Rapide SL Insulated Sleeping Pad

Big Agnes

Rapide SL Insulated Sleeping Pad

76% positive of 228 users

Comfortable with side rails, but heavy and warmth claims disputed.

5
Therm-a-Rest NeoLoft™ Sleeping Pad

Therm-a-Rest

NeoLoft™ Sleeping Pad

80% positive of 130 users

Very comfortable, good service, but heavy and bulky for backpacking.

Rankings by Use Case

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