Our T-shirts have much better moisture absorption and wicking properties than cotton shirts and are known for their breathability. In fact, tests show shirts made from bamboo viscose stay 1-2 degrees cooler than an equivalent cotton shirt. Our bamboo viscose T-shirts will truly impress if you have only experienced cotton, nylon or other "special" blends, which often encourage odor and harbor bacteria. Beautiful to the eye, there is nothing that can adequately describe how wonderful T-shirts are to the touch. Other brands are made from thinner, inferior fabric that are prone to excessive shrinkage, holes and other defects. • Roll Dyed for beautiful colors, softness and little shrinkage. • True American sizing. • 70% Viscose from Bamboo Fiber and 30% Certified Organic Cotton. • 7 oz Ring Spun 16/1 Jersey Fabric. • Side Seams and Double Needle Sleeve and Bottom Hem. Designed in California, made in China. Available in beautiful new Steel Blue, Royal Blue, Heather Grey, Black, White, Infinity Blue, Pompeian Red, Pine Green, Charcoal Heather Grey, Lemon, Lime, Navy Blue, Seal Brown and Natural. S, M, L, XL, XXL If your color is not available in the drop down box after choosing size, it is out of stock. * Please be advised the Black, Charcoal Heather Grey, Green Tea, Pompeian Red, Navy and Steel Blue colors have a subtle contrasting stitch along the shoulders. Please see picture above.