* Back protector is removable and replaceable* Attachment System for: helmet (XC, full face), protection gear (stowable)* Tool compartment (separate, wide swing-open)* Accommodates hydration Systems up to 3L (not included)* Material: N 210D Ripstop HD, 3D Air Mesh, Neoprene* Volume: 16L* Size: 27 x 56 x 11cm (10.6 x 22 x 4.3”)* Weight: 1.16kg (2.6lbs)