The unisex heavy cotton tee is the basic staple of any wardrobe. It is the foundation upon which casual fashion grows. No side seams mean there are no itchy interruptions under the arms. The shoulders have tape for improved durability. Ribbed knit makes the collar highly elastic and helps retain its shape. Will shrink in dryer. Solid colors are 100% cotton; Heather colors are 50% cotton, 50% polyester (Sport Grey is 90% cotton, 10% polyester); Antique colors are 60% cotton, 40% polyester.