100% recycled 900D polyester with PU coating. Backpack with water-resistant zippers and secure roll-top closure with metal hook. Features padded laptop compartment up to 16", separate padded tablet pocket and external zippered laptop pocket. Elasticized side pockets, padded mesh back and reinforced base. Adjustable padded shoulder straps, adjustable chest strap, compression straps, top handle and removable label.