With waterproof taping on the top and bottom, the Black Diamond Mercury 55 Backpack is ready for any abuse that you and Mother Nature can dish out. This sleek weekend-sized pack is designed for the male torso. With ErgoACTIV XPTM suspension, a 3D pivoting waist belt and SwingarmTM shoulder straps, this top-loader is designed to carry heavy loads across rough terrain. Features include an ice axe/trekking pole loop, sleeping pad straps, waist-belt and a large exterior pockets, and hydration compatibility. Youll appreciate the thoughtful design and meticulous craftsmanship of the Black Diamond Mercury 55 Backpack for many years on the trail.