Cotton:70%, Linen:30% Button closure Material: Men sleeveless shirts was made of high quality pure cotton linen, comfy and lightweight, this tank shirt keep you cool and relaxed all the time especially in spring, summer and fall. ( Model Information: Height: 73.23in Bust: 40.55in Waist: 33.07in Hip: 37.79in Size: M) Features: Fashion sleeveless design, keep cool in hot day and show your strong and powerful muscles. One front chest pocket with button design, convenient to carry small items. spread collar, regular fit, and solid color. Clothing match: These sleeveless button down shirts could be easy to match with shorts, slacks, chinos, jeans, sandals, sneakers. Occasion: Suitable for casual, daily wear, working out, work, party, club, home wear, summer beach, office work, everyday casual wear. Notes: 30-Day Money Back Guarantee. our mens shirts are sold with a 30-day, full-money-back warranty and can be returned no questions asked.