Faster and lighter Arva's Reactor 25 Tour Ultralight Airbag Backpack tips the scale at a meager 2lbs 13oz so we can still be light on our feet while we tour through backcountry terrain. Just because it's lighter doesn't mean Arva modified the airbag to be lighter but rather paired the Reactor with an ultralight backpack that still boasts plenty of features as well as a capacity suitable for the most demanding tours. The airbag itself features a gas canister deployment (cylinder sold separately) through dual air chambers around your neck head and sides for increased shock absorption and overall reliability. There's a chance an avalanche could pop an airbag but this bag's dual chamber design can help you stay afloat if only one chamber pops. Plus Arva made the safe-locking retractable handle completely adjustable so you can place it right where you want.