The Women's Base Layer is a non-restricting constructed shirt that fits closely to the skin to help regulate body temperature without interfering with the golf swing. 94% Polyester 6% Spandex. Easy to care for fabric is machine washable with minimal wrinkling or shrinkage. Easy to care for fabric is machine washable with minimal wrinkling or shrinkage. This performance fabric offers extreme comfort and allows complete range of motion during the golf swing. This anti-microbial finish helps inhibit odor build-up when ambient moisture is present. Thumb holes on the cuffs provide hand comfort with athletic styling.