adidas Energy Running Backpack 100% Polyester Imported Ventilated pockets separate out your wet stuff. Specially designed for a runner, this backpack is reflective when light hits it, to help you stay safe when running The padded waist & chest straps keep the backpack in place when running Waterproof base helps keep the bag dry if you set it on anything wet Shock-absorbing, adjustable straps for maximum comfort