☀FUNCTION Flat sewing:They are reinforced with high-density thick frabics, you needn\'t worry about threadbare hole and keep you warm all the time. Elastic arch binding Well protection in your arch area and anti cushion, which gives you all day comfort and protects your foot no matter daily wear, hiking wear and even work wear. Y-type heel stitching design: The socks with Y-Type heel fits our feet\'s construction very well, and prevent socks from slipping when you are walking and running. Moisture Wicking fabric: They keep your feet dry while hiking or working. Your feet and toes can feel better, smell better and last longer. Elastic mouth and 3:1 elastic rubber band design: Easy to strech in order to fit and hold your foot tightly and comfortablely. ☀MUTI PERFORMANCE Outdoor hiking wearing, cycling wearing, sportwearing, workwear. The socks proper size fits men/ women.The socks are ideal as gifts for families and friends. ☀Specification Weight: 87g Material: 86.1% Cotton, 12.2%Nylon, 1.7%Spandex Color:Dark blue*5 Size: 7-9D(M) US Men ☀AFTER-SALES GUARANTEE If you have any doubts about using the products, please email us. Immediate after-sales service will be provided if the item is defective.