(Photo: NuDown)The winter apparel company NuDown h... ...n a side pocket. Just pump in air to increase the insulation inside the jacket. Then release it for warmer env... ...ust add air. NuDown says 20 pumps will add enough insulation to keep out the chill on chilly days, 30 pumps wi...
https://www.neatorama.com/2016/01/16/New-Jacket-Design-Lets-You-Inflate-Insulation/
New Jacket Design Lets You Inflate Insulation
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