Each Pouch has industrial strength velcro that allows it to be attached to the harness and stay put. Velcro pouches fit the I.D. Patrol Harness. Each Pouch features 2 zippers on the top. There is also velcro on the outside of the pocket for two 2" x 6" I.D. Panels or Department/Military patches. Pouch measures 6" wide x 4" tall x 2" thick.