The Enhanced Instructor belt is an inner/outer belt system. Designed around comfort, and modularity. This belt is adaptable to a wide range of holsters, pouches and accessory’s. The two belt systems is built from 1.75” Scuba webbing, and Mil-spec Velcro. Acceptable attachment systems include malice clips, Tec-Lok, and RDR FOMI Quick Clip. (Industry standard, most Kydex holsters use these)Sizing: When ordering your belt, we recommend using you "Pant" size. Example: If you wear a size 36 "Pant" order a size 36 belt