Overview Designed for close-in "slackcountry" riding, this is our slimmed-down Float E2 airbag pack. All the same features as the Float E2-35, but 10 liters less volume, lower profile, and therefore no compression straps needed. 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. Size S/M Color Black Volume 1,281 cubic inches / 21 liters (with E2 system) Weight 5.869 lb / 2,662 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