The Carry Elastic Cummerbund is a 4-inch elastic cummerbund designed to hold eight AR magazines (4 slots on each side). Although these slots were designed for AR magazines, they can also accommodate a wide variety of other magazines, medical supplies, radios (such as the MBITR in a similar size), ammo, or just about anything that can fit in them. cummerbund circumference is fully adjustable front and back. This product works with many different platecarriers that have cummerbund slots on the back