Being able to quickly and quietly index your ammunition sources even under extreme duress could mean life or death. Quicken your reload times by utilizing this dually flapped magazine pouch. This rugged black nylon pouch is built to last. The CurteGear Ammo Pouch Utilizes a patent pending neodymium magnetic fastener for each magazine well. The ammo pouch is innerbelt or duty belt applicable and can be worn, vertically (recommended) or horizontally. The Curtegear Ammo Pouch holds wider single magazines and/or double stack 9 mm and 40 caliber magazines. Size of magazine well in inches- Length 3.5' X Width 2' X Height 1'.For best magnetic pull force be sure that the fastener lines up equally.