Hat and Beyond Mens Tank Top Muscle Fit Active Exercise Sleeveless Shirt Premium 100% Cotton Machine wash warm water ; Tumble dry. Heather Gray - 90% Cotton/10% Polyester, Charcoal - 50% Cotton/50% Polyester Standard US Sizing Double needle stitched hems Tightly knit fabric - softer and stronger |WARNING| Hat and Beyond is the sole distributor for this particular item and design. Please check the seller's name before placing an order. Products that are sold by other sellers are counterfeit products and these unauthentic products may have size, color, and other quality issues. We are not responsible for return or exchange if ordered from other sellers.