Military Outdoor Clothing Never Issued U.S. G.I. Medium Olive Drab Nylon Grenade Vest U.S. GI genuine military-issue grenade carrying vest Olive Drab nylon duck fabric with mesh upper and back Zippered front closure; adjustable buckled back strap for snug fit 20 snap pockets for 40mm HE ammunition and 4 longer pockets for flares Size medium fits 39 to 42-inch chest