Calgary Airbag 18L Backpack - the pioneer!The world’s first eco-friendly avalanche backpack Calgary Airbag 18L Backpack by Arva is the preferred companion of freeriders who care about the environment. A sustainable, compact backpack with the lightest, most compact and efficient double airbag system on the market. FeaturesChest strap with emergency whistleIce axe loopA-Frame ski support systemSnowboard/snowshoe carrying systemCarrying system for safety equipmentTrigger in shoulder strap pocketPocket for valuablesThermoformed back panel for optimal adaptationLow-profile technology: the airbag is integrated directly into the backpackYKK® zipsFront access to the main compartmentCompatible with the Arva helmet mount