With so many ways to wear this, you'll want this muscle tee in every color.The Slub Knit Muscle Tee by Southern Shirt Company is an ideal summer staple with its sleeveless, solid design in bright white. Made from a blend of 98% polyester and 2% spandex, this slightly cropped tee features a slub knit texture and convenient side vents. The pull-on style and crewneck offer effortless wear. Care instructions recommend machine washing.