Cotton is a perennial favorite when it comes to tee shirts and that goes for tanks and muscle shirts as well as classic crew styles. Cotton is breathable, durable and hypoallergenic, which means it's kind to your skin. And such a versatile fabric suits any kind of sleeveless t-shirt. Cotton ribbed tanks are offered in a variety of styles, with necklines like square, or a deep scooped neck. Some sleeveless tees have longer hems--easier to tuck in and stay tucked in--or are narrow around the hips for a close fit. For a body-hugging fit, try cotton tees with a touch of spandex or lycra. You'll get all the softness of cotton with a reliably close fit. To make shopping easy, check out HisRoom's softness and fabric weight guide; you'll find it on every product page.