SIZE TIPS: Choose the knee high compression socks (3 pairs) by calf circumference. S: calf 9-11in, mens US 3.5-5.5, womens US 5-7. M: calf 11-14in, mens 5.5-7.5, womens 7-9. L: calf 14-16in, mens 7.5-11.5, womens 9-12. If you are between sizes or your size is on the borderline, the larger size is recommended for optimal comfort. The compression socks will feel tighter than your regular socks, which means they are working effetively.
