Klymit Inertia O Zone Lightweight Camping Air Pad

This is moderately comfortable, if you can get enough air into it. It stated there is a hand pump included for higher psi, but there was none in my box. It is light and small, as stated, but does not have a firm enough loft when blown up to keep one suspended well when turning to different positions during the night, at least without the hand pump (which again, was not enclosed). It has a poor valve design, a bit more difficult to keep air in while you close it. A twist valve like a Therm-A-Rest pad is much easier to keep air in the pad as you blow and turn to close. This one requires you to hold the top or slip the top of a thumb or finger on top while you are trying to blow (or keeping your tongue over the opening) to push it down to close, while also holding the base. Stupid design, in my opinion...seems like they tried to create their own design just to be different, not better. I haven't used it camping yet, just laid on it a few times on the floor, and one night on my mattress to test leakage. I only weigh 160 lbs, but the tubes crush down too easily with the psi I get by blowing into it. Again, I have no issue getting my Therm-A-Rest valve to full pressure needed. Sooo.... nice & lightweight, a bit narrow (I'm only 5'6" and not a wide-body, but my arms hang off the pad) but acceptable (also be nice if they had a shorter model), moderately comfortable, poor valve design.

For as lightweight and spartan that this seems initially, The performance speaks for itself. I'm not a big guy. only 5'3" and 125 lbs. So i had plenty of room to move around, never touched the ground, and always had a well supported, and comfortable nights sleep. The price was excellent, the materials and craftsmanship seem very solid. If properly rolled up, its about the size of a 12 oz. can, And about the same weight and fits neatly into my pack. This is made to be essentially bare bones, in case you couldnt tell already. while inflated, it curls up in multiple areas. this is not a manufacturing defect. this is to keep it up off the ground, and make sure there's more air in your sleep system to keep you well insulated and warm, despite the small size and loft of the pad. if you're going for weight, but dont want to sacrifice comfort, i highly recommend that you give this a try.

Filling my lungs slowly and to capacity with each breath, it only takes 6 breaths to inflate the body and about 1.5 to inflate the pillow. I like to deflate the pillow slightly as it is more comfortable for me.I almost always have to fall asleep on my sides, and I thought the pad was comfortable when doing so. Sometimes I like to lay on my back and pull my feet close so my knees stick up into the air. The holes in the bag provide perfect resting spots for my heels and I can relax without having to hold my legs up.It was very comfortable lying on my sides and back, but I can't speak for stomach sleeping as my back won't let me enjoy that regardless of the pad or mattress.It can be a bit hard to force the air out after you are done using it. If you fold it the wrong way, the air will get trapped easily and you'll have to retry.

I used the Inertia O Zone for 3 nights while backpacking at high altitude in Inyo National Forest. The nights were cold (low to mid 30's) and two of the sites were on very hard ground. I placed the pad inside my sleeping bag because as opposed to under it because I tend to roll around a bit and almost always end up rolling off of a traditional backpacking pad and onto the cold hard ground in the middle of the night. The pad fit perfectly in my Mountain Hardware mummy bag. I was very surprised how warm the bag stayed considering it was not under the bag. From what I read, the voids in the pad allow the bag to loft into those areas, helping to keep things warm despite not having an insulation value. It was also very comfortable, considering it's weight and size. I am a side sleeper and some pad do not offer sufficient padding; but the Inertia was relatively comfortable. I don't really love the pillow, but it was not terrible. Overall, I give this pad 5 stars and would purchase it again.

[EDIT] I have had a chance to take this out for a couple nights.I have a Thermarest ProLite and love it.... it's very comfortable when I'm sleeping on the ground (as opposed to a hammock which I prefer) but it's somewhat heavy and bulky (I'm trying to cut down on overall pack weight). Enter the Klymit Inertia O-Zone. 12oz and much more compact. It's about the height of a nalgene bottle but thinner. Although it's easy to deflate and roll back up, I'm guessing that it'll never be as compact as it was when first unpackaged. But it's still quite packable and easily fits back into its stuff sack. It also comes with a repair kit which is stored on an inner pocket in the stuff sack. I'll keep that along with it ... just in case.Out on the trail or in a campsite, it's very easy to inflate and use. It fits perfectly under my mummy sleeping bag or can easily be slipped inside it. Laying on my back, it's fairly comfortable. The only problem I found was that I'm a side sleeper. When on my back, my weight is distributed evenly across the inflated air panels but when on my side my weight is more focused at my hips and one leg (rather than both). I'm not very heavy but this doesn't appear to give me much support when sleeping like this. While I like the Inertia O-Zone for it's compact size and low weight, it may alternate duty with my thermarest depending on where I'm going and how much load I'm already carrying. If I can spare the size/weight, then the Thermarest Prolite is going to be my "go to" choice while ground dwelling. If size/weight is a consideration, then I'll go with the Klymit Inertia O-Zone and make due. I don't dislike it by any means... It's just not the "best" option.And for what it's worth... while in the hammock, my pick is my Jacks R Better Greylock 3 underquilt.

Very light and packs small but not that comfortable or warm.

I thought it will be too short for my husband that is 189 cm tall but it's fits perfectly, the width is perfect as well.

Packs up small, light. Three comfortable nights on the trot.

Perfect ;)

Excellent size when packed