I have ridden DH w/pack six days - this is an excellent product. Well designed and has many features that ads don't tell. Shoulder belt straps & back pad are quality. Fit comfortably over armour.The H2O bag holder is separate so goods stay dry in large main compartment. 2nd compartment holds tools in a net and pump in a sleeve & has two zippered nets for keys and small goods. 4 bottom zip compartments - 2 are soft lined for elects etc. Also top zip is soft lined for sunglasses/goggles. Outer back contains dry map zip and holds FF helmet w/pouch for gloves & concealed bottom straps hold armour. Dakine quality with nothin' you don't need.