Mountainsmith Lumbar-Recycled Series Dart TLS R Backpack Made from 450d ReForge PET RipStop body fabric (100% Recycled) Made from 100 percent recycled PET fabric Removable shoulder strap and air mesh foam back panel; tuck-away waistbelt; two water bottle pockets and elastic rigging Zippered main compartment, interior zippered hanging pocket, zippered front panel with key clip Bright yellow lining promotes visibility and 3M reflective highlights Zippered front panel with key clip.