High Sierra Long Shot 70 Hydration Pack Amazon 18x11x6.75 Inches 1098 Cubic Inches Large multi compartment design and side access hydration compartment with shoulder strap hose jacket holds 2 liter reservoir Front zippered pocket holds bicycle tools, accessories or media player Adjustable waist belt secures the pack while the adjustable sternum strap helps stabilize the pack Hinged front pocket holds a helmet 18x11x6.75 inches 1098 cubic inches 976 cubic inches with filled reservoir