Insta Slim Men's IS Pro Short Sleeve Raglan Compression Under Shirt (Navy) For the man who wants to look his very best Slims, firms, and tones your body Improves your posture 72% Nylon/28% Spandex, machine washable, made in the USA Available in Men's sizes Medium (38-40 chest), Large (42-44 chest), X-Large (46-48 chest), and 2X-Large (50-52 chest)