BCA Mountain Pro Avalanche Airbag Vest - Powered by the Alpride E2 Supercapacitor. The Avalanche Airbag Pack Features a Dedicated Shovel/Probe Compartment, Side Stash Pocket, Fleece-Lined Goggle Sleeve, and is BC Link Radio Compatible. 8.1lbs total weight including the Alpride E2 supercapacitor system 15 Liter Storage Capacity within the Vest and the Airbag is a 150-Liter Airbag. Torso Size: Medium/Large 15" - 18". Torso Size: XL-2XL 17" - 21"