Hydration backpack pack volume 3 litre application walking materials 210 d ripstop nylon 210 d oxford nylon polyurethane suitable for women men shoulder strap material air mesh chest straps with chest strap adjustable hip belts with waist strap with pockets adjustable additional fastenings helmet holder stick holder carry handle top back panel pods 2 outside pockets side pocket front pocket internal pockets hydration bladder compartment special featu