4” Elastic Cummerbund. Optional add on for the Rig Plate Bags. Works with any Plate Carrier that has Velcro on front and back. Front cells can hold pistol mags/miscellaneous items, back cells can hold Sharpies, Chemlights, etc. 3 middle cells will hold 5.56 mags small radio, etc. This item is made to order. Allow 2-4 weeks for construction.