Overview Our full-fledged E2 airbag pack with the whole gamut of features including our waterproof coated nylon, Side Stash pocket, Back Stash zip, curved side access zip, removable ski/snowboard/compression straps, hip belt pocket, "cooling fin" backpanel ventilation, and dedicated safety tools pocket. Description BCA&';s new Float E2 airbag packs use an Alpride E2 supercapacitor to store energy that powers the compressor upon deployment. Supercapacitors store and release energy based on magnetic energy rather than chemical reaction. This means their performance is much more reliable in cold temperatures. For the same reason, the energy stored in a supercapacitor releases faster when it&';s activated for deployment. System Alpride E2 supercapacitor system with 150-liter airbag Volume 1,891 cubic inches / 31 liters (with E2 system) Weight 6.157 lb / 2,792 g (with E2 system) Features A-Frame Ski Carry Material PU Coated Nylon 420d Ripstop Zippers YKK with DWR coating Warranty 3-year Limited Warranty