Open top IWB magazine pouches are designed to be worn inside the pants. The single IWB mag pouch is constructed of heavy-duty webbing with steel spring clip. The belt clip of this magazine pouch fits over belts up to 2.25" wide. This IWB mag holster is made in the USA. Item Description Part Number Open Top Mag Pouch Holds one, single column 9mm/40/45 cal (except Glock) mag, clip on OMP Open Top Mag Pouch Holds one, double-column 9mm/40/45 cal, or Glock 36 mag, clip on OMPL Open Top Mag Pouch Holds one, Glock 26/27 magazine, clip on OMPS