Merrell Opti-Wick fabric transfers moisture away from your skin and dries quickly to keep you comfortable. 97% polyester / 3% elastane. Merrell Ionic soft and stretchy fabric wicks moisture, dries quickly and offers everyday performance that feels great. 20+ UPF fabric. Printed stripe pattern on a heathered background. Wrapped flatlock stitched side seams add interest and reduce chafing. Embroidered Merrell logo.