From Flat Socks, the Micro Wool Cushioned Liners 3 Pack features: 3 pack: Comes with one pair Dark Heather Grey, one pair Light Heather Grey, and one pair Sand polyester microwool material Odor-control tech helps keep feet fresh Moisture-wicking pulls sweat away Supportive foam makes every step comfy Fits up to women's size 11 Machine wash cold with like colors, no bleach; tumble dry Directions: If possible, remove current insole in shoe and use as a trim guide for Flat Socks. If you can’t remove shoe insole, use trim guides on the back of the Flat Socks and trim to the correct size. Imported.