The Russell Athletic® Essential Muscle Tee offers the comfort of cotton combined with the benefits of performance. This lightweight crewneck sleeveless T-shirt delivers the comfort, style, and performance to fit your active lifestyle.<br> <br> <ul> <li>4.75 ounce </li> <li>60% cotton/40% polyester </li> <li>Oxford: Oxford 47% cotton & 53% polyester </li> <li>Dri-Power® Moisture Wicking Technology </li> <li>Odor protection </li> <li>Tagless label </li> <li>RUSSELL ATHLETIC heat sealed label on bottom left front </li> <li>Crew neck </li> <li>UPF 30+, provides protection from the sun</li> </ul>