The Calcutta CTB370-4 Tackle Bag is constructed of 600D poly material and offers tons of storage. The large front large pocket will hold 2 each 360 size trays and has an additional flat storage zipper pocket on the front, 2 zippered side pockets, a large mesh pocket on the back, and cell phone/GPS holder on the front with pliers holders on both side pockets. The large carry handles and padded shoulder strap make carrying the Calcutta CTB370-4 Tackle Bag a breeze. Another convenience comes in the form of an ID holder on the top of the bags cover.