These socks have a structure that firmly wraps the heel, providing a comfortable fit that prevents them from slipping off. By ensuring a secure fit from the toes to the heel, they reduce slippage, which can lead to light footwork and reduced foot fatigue. Details are incorporated throughout to enhance comfort, such as preventing sock slippage, which can be a source of stress, and varying the knit structure for different parts of the sock. They are suitable for a wide range of activities, including golf, outdoor activities, tennis, jogging, and everyday wear. ■ Antibacterial and Odor-Resistant Material: Polyester, Cotton, Others Size: Free Size (22-24cm) Length: 39cm I have purchased these and removed the tags, but I have never worn them. Please understand that they have been stored at home before purchasing. Thank you for looking.