Art. - Reflective dimensions and classic logo screen print details All Season fabric, made from 100% recycled polyester All Season liner made from 100% recycled polyester Signature TPU diamond lash tab with hook-and-loop for hanging equipment YKK zippered closures with Prusik cords and slip-resistant pull tabs Contoured nylon shoulder straps Removable sternum strap with a 105 dB rescue whistle Removable waist strap with gear attachment tabs Air channel mapping EVA-padded back panels Built-in hydration system Dual power mesh water bottle pockets expand to fit different sizes Floating top pocket Internal tool organization system