Designed for quick day trips along favorite trails or off-trail scrambles, the Nitro is Black Diamond"s most nimble, simple, lightweight technical daypack. Built with its innovative reACTIV suspension, the hydration-compatible Nitro has a zippered front panel opening for easy access to bulky items and a front stash pocket for rainwear or quick layers. Volume: 24 L, 1,465 cu in (size L); 22 L, 1,340 cu in (size M). Average Stock Weight: 980 g, 2 lb 2 oz (size L); 940 g, 2 lb 1 oz (size M).