If 13 is your lucky number then these performance socks will be perfect. They hug your feet in crazy styles and ultimate comfort and are built to last. Featuring more ultra-wicking fiber and our exclusive super-soft yarn so your feet stay dry, cool and comfy no matter how hard you play. Made in the U.S.A. Featuring Stretch-to-Fit™ sizing system and our exclusive Easy-Fit™ cuff for a perfect fit every time on any foot. Double stitched heel & toe. Available in S/M - Fits Ladies shoe size 6-10 or Men shoe size 5-9 OR L/XL - Fits Men shoe size 9-13 or Ladies shoe size 10-14.