Mens COBALT Magic Silk Mustang Bikini (100% Silk) Mens Mustang Bikini. Cobalt and Black. Sizes by Waist Msmt -Small (28-30), Medium (32-34), Large (36-38), X-Large (40-42) 100% Silk (Machine Wash Cold, Delicate. Tumble Dry, No Heat.) Silk Bikini Underwear w/ Magic Silk Branded Elastic Waistband