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Klymit Inertia X Frame Sleeping Pad


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Inertia X Frame Sleeping Pad

Klymit's Inertia X Frame Sleeping Pad rolls up to the size of a soda can and is one of the lightest pads on the market for ultralight backpackers. Its loft pocket profile rids excess fabrics without sacrificing your comfort for lightweight convenience. Klymit added a dry air pump, a stuff sack, and a patch kit..

  • Loft pocket profile
  • 3-5 breath-inflatable
  • Dry air pump, stuff sack, and patch kit included
  • Item #KLT0002

[top] 30D polyester, [bottom] 75D polyester
72 x 18 x 1.5 in
Loft Pockets
yes, Dry Air Pump
Stuff Sack
Packed Size
3 x 6 in
Claimed Weight
9.1 oz
Recommended Use
ultralight backpacking
Manufacturer Warranty
limited lifetime

Tech Specs

What do you think about this product?


>Rating: 5

Does what it was designed to do

I've used it several times

A friend has used this pad religiously for years (another review for you...), so I tried one recently on a 7-day Sierra trip where I took a lot of camera gear and wanted to eliminate every other ounce that I could. It's definitely not as comfortable as a regular air mattress, especially if you're a side sleeper like me. However, it worked reasonably well, especially after a few nights of getting used to it. The nights were warm enough that I didn't test its insulating ability or lack thereof. Also, I'm 6'2" and it was just a bit shorter than ideal, but not where it counted, my shoulders and hips. I'll probably take my regular air mattress when I don't mind the extra weight and bulk, but I don't regret using this one at all. It was exactly what I needed and expected.

>Rating: 2

Bad Valve

I've used it once or twice and have initial impressions

Love the pad, but I have to second the review by Regan. The valve failed on my second night with it and I was left sleeping on the duff. Would order again once the valve is revised.

>Rating: 2

2 Pads - Lasted only 3 nights combined

I've used it once or twice and have initial impressions

A friend and I bought these for a backpacking trip to Glacier. The first night I used mine it was completely deflated when I woke up. I'm 112 lbs, so there is no way the weight of me created enough pressure to break the thing. Yet apparently, it couldn't hold. The valve used by the pump (not the end you physically blow in) ended up springing a slow leak. Two days later, the other valve on the second pad busted as well. One of the them we managed to tape up to last the rest of the trip, but for $53? Not recommended. We luckily grabbed another pad before heading out to the backcountry. Otherwise, I'm 5'5" and the pad fits a bit large for me, so my feet don't quite fit on the pad. It did keep us warm and off the ground, so when it works, it's great. The weight and the size it packs to makes it ideal for backpacking, but I do caution you of the crappy valve seals.

>Rating: 5


I've used it several times

Lightweight and still does the job. Insulates against the cold ground yet packs down to roughly the size of a can. Your back will thank you while backpacking.

>Rating: 5

Great ultralight comfort

I've put it through the wringer

I've had many nights of comfortable sleeping on this pad in all kinds of mountain enviornments: Adirondacks in NY, Beartooths in Montana, Windrivers in Wyoming, Boundary Peak basecamp in NV, and most recently the Foothills Trail in SC. The design of the pad is such that it provides comfortable support for head, shoulders, hips, and feet, while keeping you off the cold ground. I like to use mine under my sleeping bag to help the bag stay off of any debris Inevitably tends to accumulate on the tent floor. The insulation in the bag is able to loft uncompressed into the open spaces in the X-Frame pad to help maintain warmth, although it is probably not well suited for winter use. I am mostly a side sleeper and I am comfortable on this pad in that position as well as on my back. There are more comfortable pads on the market, but backpacking with a pad that weighs (with stuff sack & pump included) only 10.4 oz. and packs about the size of a fat beer can is an important step to help lighten the load while hiking.

>Rating: 4

smaller is better

I've put it through the wringer

I used the Inertia sleeping pad on a six day bike packing trip from Banff to Whitefish, MT and this little fellow was a life saver. Small and compact, plus lightweight were great for packing up on the trip, but the pad proved to more than adequate on the comfort end of things.

>Rating: 5

Lighter than Air

I've used it several times

This pad is incredible! Coming in at 9.1 oz and compressing to 3 inches x 6 inches in your backpack, you will be hard pressed to find a smaller and lighter pad. I was hesitant at first to try the lift pocket profile, but it is actually quite comfortable and all major body parts are easily supported by this innovative design! Further, the included pump ensures that you can pump the pad up sufficiently to get you off the ground and the design is meant to fit inside of any mummy sleeping bag, and it does so very easily. If you want an ultra-light sleeping pad, look no further, here is your holy grail!

Are you sacrificing comfort for lightweight? I have the Therm-a-Rest Z Lite which isn't super heavy, but was looking at other, packable options that don't have to be strapped to the outside. I also thought it was interesting it could be put inside your sleeping bag.

Hey Jamie, honestly for me, I don't notice a major difference in comfort between this and my old Therm-a-Rest. I guess the only thing I did notice is that if you like to roll on your side while you sleep it isn't as comfortable as a regular sleeping pad. Ultimately, with the weight savings, any discomfort while I was asleep made up for the excess weight and bulk of carrying a larger and heavier pad.

Dan, thanks for the reply to my comment--helpful! :)