Art. - Reflective dimensions screen print detail 94% nylon, 6% polyester ripstop fabric 100% recycled polyester liner coated with polyurethane Abrasion-resistant nylon webbing Reflective tabs for enhanced visibility Drawcord closure Top carrying handle Contoured and adjustable air mesh shoulder straps Removable sternum strap with a 105 dB rescue whistle Removable waist strap adjusts to keep bag secure Air channel mapping EVA-padded back panels Built-in hydration system with internal reservoir pocket Power mesh water bottle pockets expand to fit a water bottle up to 3" in diameter Zippered hanging pocket with key clip Herschel Outdoor Equipmentâ„¢ label