Designed for high-performance mountain riding, the Float E2 MtnPro Vest offers full protection to the chest, ribs, and back - and now includes our Float E2 airbag system. Our new Float E2 MTNPRO airbag vest uses an Alpride 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. The E2 Float MTNPRO Vest is our dedicated sled-specific airbag vest for mountain snowmobiling. Gearing up is easy with this all-in-one, lightweight breathable protective vest featuring built-in integration for a Tracker avalanche transceiver and BC Link radio. Other features include integrated low profile pack to carry avalanche gear and a few other essentials. Full front, side and back protection with 1mm of hard shell ABS sandwiched between two layers of PE foam. Oval "ergo" trigger is less likely to snag on trees than round or T-shaped handles.