Features YKK® Shockonlok™ main buckle resists water absorption often caused by high humidity, stable under extreme temperatures such as cold mountain top air & desert heat Removable flap reduces weight for lighter ride days & less hassle for mechanics Tire tube pocket is big enough to fit a spare tube or other necessities Tool compartment with key loop, clear plastic bolt pocket, fold down mesh pocket & elastic straps specifically designed to fit the basic tools needed to fix your bike on the trail Water bottle side pocket Side tool loops are wide & clutter-free Nylon grip strap helps keep the strap from loosening up & keeps it secure to the body No-slip back keeps pack in a secure position on rough terrain Capacity: 5L / 302 cubic inches