Athlete-tested and arena-proven, our Kirby Pro Shirt is built to compete. It's engineered with an easy-care performance fabric, which stretches with your every move and looks polished right out of the wash. Add UPF sun protection and a flattering, saddle-ready fit, and you've got a shirt that can keep up. Kirby Pro Shirt Women's Kirby Pro Shirt in Nantucket Breeze Polyester, Size: XS by Ariat