This small removable zippered pouch is designed as an accessory for EP-FLEX Backpacks. It attaches with Velcro to the inside of the main compartment door. It has a clear see-through top which makes it easy to identify it's contents. Dimensions are 8” W x 4” H x 1” D. Capacity is 32 square inches. Deluxe EP-FLEX Backpacks are designed to hold 2 small pouches, while the EP-FLEX4 PRO can hold 3.