ForeverSilk Men's 100% Silk Knitted Underwear Boxer Briefs 100% Mulberry Silk The Natural Silk Fabric Makes These Briefs Comfortable And Breathable Double-Layer Crotch,Full Back Coverage 30 Degrees Light Machine Washable; Use Neutral Detergent Or Special Silk Detergent; Hang Tt On Hanger And Dry Place Away From Direct Sunlight Notice:Please Select The Size According To Our Size Chart in the Product Description Below