600D polyester with latex rubber backing. Two separate storage compartments. Quick stash zippered front pocket with reflective piping. Mesh backed shoulder straps and contoured padded mesh back panels. Quick release side compression straps. Dual mesh drink bottle pockets (bottles shown not included)|Heavy duty zippers and accessories. Rubber feet for added protection. Mesh backed padded quick grab handle|MP3 pocket in front compartment with rubber headphone exit port. Capacity: 28 Litres.