I like to refer them as a Ammo Belt they call it a VTAC BROKOS BELT BLACK that comes in 2XL and 3XL. These belts are great for carrying extra ammo in the field. We used them when I went Pheasant hunting and Goose hunting for carrying the shot gun shells. It was a handy way to tote your ammo. It also has little pockets for clips if you are Big Game hunting. There's a adjustable belt buckle that will fit most average sized people. It's really nice to have all of your ammo right there and plenty of it so you will have a good day hunting those corn fields. For $68.00 it's a steel. 5.11 Tactical has a very nice product here.
http://www.ebay.com/itm/5-11-VTAC-BROKOS-BELT-BLACK-2XL-3XL-/121029477933?pt=LH_DefaultDomain_0&hash=item1c2deb462d
