Large. This Universal Holster and Magazine Pouch from Galati Gear features a Velcro hook and loop system on the back to attach inside a Modular Pockets, Vests or anywhere Velcro is present. Made from durable fabric holster body with a 1 1/2" elastic retention band for securing an extra magazine, flashlight, knife or a collapsible baton. Overall Dimensions: 8" x 4". Opening at top is 5 1/2". Opening at bottom is 3". Black.