This triple Pistol Mag Pouch fits most pistol mags. It has elastic compression straps on both sides of each pouch to ensure that your mags are secure. Each pouch has a hook & loop flap allowing for variants in the length of some mags. This pouch is 4"H x 7.5"W x 1"D and has two removable straps on the back to mount to your webbing when needed. These straps also allow the pouch to be belt mounted. This triple pouch can also be deployed for use with tools or other utility items.