Phthalate free,Made out of 600D PolyesterRipstop and backed with weather resistant coating,Features a large main compartment with cinch closure, a front zippered pocket,Two side mesh pockets and a slash pocket,Includes elastic bungee cords and a lightly padded back,Padded air mesh adjustable shoulder straps with an adjustable sternum strap for a secure fit ,Note this bag is (H20) 2L hydration compatible