Description of Black Diamond Covert 22L with AvaLung To streamline off-piste travel, this low-profile Covert includes an integrated AvaLung. The pack is built from tough, water-shedding 420d nylon and 1300d Ballistic reinforcements using a clamshell design for easy gear access. On the exterior, an adjustable ski/board attachment system, ice tool loops, compression straps and a pocket let you conveniently carry your essentials, and the right shoulder strap features a zippered hydration tube pocket. Features: Waterproof 420d SilNylon ripstop fabric 1300d Ballistic reinforcements Clamshell design for easy access Ouside pocket with quick-release buckles Ice tool loops Compression straps Adjustable ski/board attachment system Weight: 1.3 kg (2lb 4oz) Volume: 1,342 cu in (22L)