Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad

Pretty comfortable air mattress , good quality , easy to carry and store .

Best mattress out there

Pros- Great for camping. Self inflates with bag of air (please watch a video on how to fill up quickly). Can adjust how much air for firmness, pretty comfy, good quality, good length. Con- toddlers think it’s a trampoline, hard to sleep next to someone as they are meant for one person, even with a second next to them. Does slide a bit on the bottom of a tent.

Great product and fast shipping

Over $250 for a product that only lasted 4 months. While sleeping on it one night, I hear the faint sound of what sounds like velcro being opened. Slowly, a lump formed in the top of the mattress the size of a pillow, and then the mattress deflated. I contacted customer service and was told to return it with postage paid by me, no return label provided by Cascade Designs! I was then told it will take 8 to 12 weeks for replacement! I have bought Thermarest products for over 40 years, but this will be my last. I now have a competitors product (while I wait 2 to 3 months for a replacement) that has a better guarantee and actually has customer service. Save yourself some time and money, Do not buy one of these!

I have slept multiple nights on it with zero issues. It is big, but man is it comfy. Definitely not a backpacking pad, but if you have the room in your car, you can't go wrong. I would even use this at home as a spare bed in a pinch.

Purchased in May 2021, so lasted 4.5 years of moderate use. While sleeping on it last week Dec 2025), I heard a pop, followed by more and more pops throughout the night. The seams that keep the mattress’s integrity while full started to release. This allowed for uneven air distribution, rendering the mattress unusable. I paid $299 in 2021. It was good while it lasted however. Photo attached (that’s not a built-in pillow). Use this information as you will.

The only thing I dislike about this, is that it didn't exist sooner. 😂 Easily the best camping air mattress I've ever used. It felt like sleeping in my own bed, because of the foam, it's great. I slept well, all night, on the ground, in the woods. No tossing and turning, and I felt rested in the morning. It's not loud or makes weird noises when you move around on it, and it feels soft to the touch instead of plastic or something. It will basically self inflate, but the bag it's stored in can be used as a pump, which is neat, but I bought the tiny pump for it. Inflates in under 10 minutes I think. It's a bit bulky, not for backpacking but if your worried about your back and want to camp, use this mattress, my 75yo dad approves. 👍 It seems well built and can support my fat butt so I recon it will yours too, and be comfy. 🥰

自動空気入りの仕組みがあるのため、使いやすい。また、マットレスが厚いので、心地がすごく良い。XXL ver.を選らんたので、以前使った他のものに比べで、断然贅沢気分。

Ii cellophane che avvolge il materasso è arrivato rotto in più punti. Speriamo bene. Valutazione del materasso da confermare dopo l'uso.

The most comfortable sleeping pad I have ever used or slept on. With an R value of 7 it will no doubt be suitable for all seasons. It feels very durable & the soft, stretchy material just adds to the comfort factor. Sure it packs large & is not exactly suited or designed for hiking or backpacking but after several punctures & leaks with expensive ultralight pads I would much prefer the security of knowing I will get a great nights sleep so I will make the extra bulk & weight work. 5 stars!

Die Matte ist ein Superlative. Man liegt wie auf einer Matratze, super komfortabel und bequem, dazu warm. Die Matte ist super leicht. Der Preis ist gerechtfertigt.

J'ai acheté le produit pour camper 10 jours, le matelas se dégonfle seul au bout du 5 jours d'utilisation, pour ce prix prenez un sous matelas et un matelas Decathlon, 260€ pour dormir par terre après 5 utilisation .... Encore merci