Handheld cartridge air pumps are usually reserved for bike tires. But two years ago, Klymit, a company in Ogden, Utah, introduced a line of jackets that get their insulation not from goose down or synthetic fill, but from gas. The gas, argon to be precise, is pumped in via a handheld gun and small C02-like cartridges. The result is one of the more innovative, if not questionable, outerwear technologies of the last decade. For this article, contributor Yoon Kim spoke with Klymit founder Nate Alder, the man who invented the inflatable jackets (and now sleeping pads, too) with the aid of some obscure household items, including a bike pump, canisters from a wine distillery, and an old pair of Reebok Pump basketball shoes.
Yoon Kim: Can you pop your jacket in a bad wipe-out while skiing?
Nate Alder: I’ve wrapped myself around many trees following skiers because I board and I am yet to have a puncture. The materials are durable, so it’s not likely. But if it does happen, we include a patch kit with every jacket, which is [the same type as] used for river rafts.

What happens if your gas cartridges run out and you’re left with a deflated jacket in the backcountry?
Similar to what happens when you run out of gas for a stove — you can be SOL in a lot of situations if you’re not prepared or don’t bring the proper equipment. But one Klymit canister will do five inflations and each inflation can last weeks to months. Worse comes to worst, you lose a canister or forget it, you can use the dry air pump and you’ll be as warm as down.
Backing up, what exactly is Klymit and how is a Klymit jacket different from any other jacket?
When I was a snowboard instructor back in college I noticed that existing fiber insulations have three setbacks that consumers have just learned to live with: inefficiency, bulk, and the inability to adjust. We wanted to make warmer, thinner, and adjustable insulation, but what really sets us apart is that, although we are hands-down the warmest insulation on the market, we are also the only adjustable insulation. With the turn of a dial, you can adjust your insulation needs without batteries [you can pump argon gas in at will and also let it flow out for less insulation when needed]. While fiber insulations gets four-times heavier and colder when wet, Klymit NobleTek is waterproof. Our jackets fit snug to minimize drafting, it’s totally buoyant, and interestingly, one military application we found is that it can conceal the body heat signature for night-vision heat sensing.



