In the Brand's Own Words:
This super soft (thanks Tencel!), sweat wicking tank with a ruched back works just as hard in the gym or studio as it does with jeans. It is lightweight and perfect for summer. It sports a high neckline and semi-relaxed shape. Model is 5'10" and wearing size S. True to size. 79% Polyester, 14% Tencel, 7% Spandex For black version with metallic stripe, machine wash cold and air dry to preserve the special finish.