Mountainsmith Lumbar-Recycled Series Day TLS R Backpack Made from 450d ReForge PET RipStop body fabric (100% Recycled) Zippered main compartment has zippered hanging pocket and bright yellow lining for visibility; also features a zippered front panel pocket Removable shoulder strap with a sliding pad, tuck-away waist belt and air mesh foam back panel Delta Compression System load adjustment with two compression straps 2 water bottle pockets that accommodate 32-ounce water bottles; reflective highlights Made from 100 percent recycled plastic water bottles; four water bottles make each bag