It is an excellent size for carrying spare masks, DSMB's or slates. The Mesh design allows water and sand to easily drain from the pocket. 4 rear brass grommets allow the pocket to attach directly to the WTX harness waistband using a hardware kit. Construction is 1050D ballistic nylon & V-diamond rubber mesh material with chromed brass grommets. Four rear grommets allow the pocket to attach directly to the WTX harness waistband using hardware kit, plus a web loop to slide over standard 2-inch (5 cm) waistband webbing. Size: 135mm x 230mm / 10″ x 5″