The Women's Active Ultralite Racerback Tank features:

• This ultra-lightweight, super-soft performance fabric, blended from Merino and TENCEL™ Lyocell fibers is designed to help you stay cool and comfortable when you work up a sweat
• Size Medium Weight: 72g (2.53 oz)
• Fit: Regular
• Knit in Vietnam: 53% Wool, 47% TENCEL™ Lyocell