The total length of the pocket is { 7 in | 18 cm } and the width is { 2 in | 5 cm }. The top opening is { 2 in | 5 cm } and will accommodate lights up to { 6 in | 15 cm } in length. It can hold most of the various handheld style backup lights sold by Dive Gear Express. This nylon mesh pocket features a Velcro® closure, is designed to drain easily and is abrasion and tear resistant. A stiffener helps the pocket retain it's form for ease of replacing the light back in the pocket.