Men's Bamboo Viscose T-Shirts V-Neck Men's Undershirts 95% Bamboo Viscose / 5% Spandex Imported Do not blench 95% Bamboo Viscose / 5% Spandex Soft and Breathable 180 gram Bladies bamboo viscose products is from the nature bamboo with the low price,please dont hesitate to get it. It will keep you cooler in the summer, and you can layer it to be warmer in the winter