Black Diamond Size Chart With a 20-liter storage capacity, the Black Diamond Magnum 20 streamlines your necessities on all-day missions that require a step above the bare minimum essentials. With an internal stow pocket and a trekking pole or ice axe loop supplemented by side stretch pockets and front web compression, the storage options are many. A hydration pocket and bike light attachment add versatility. Features: - Contoured shoulder straps and OpenAir(TM) backpanel - Zippered panel opening and internal stash pocket - Easy-to-remove 20 mm webbing hipbelt - Bike light slot - Side stretch pockets, front web compression and storage - Hydration compatible - Volume: 20 L (1,220 cu in) - Average Stock Weight: 900 g (2 lbs ) - Materials: 210d nylon ripstop, 400d nylon twill - Last Chance: Discontinued Style