Pink Ribbon Breast Cancer Awareness Knee High Socks Sports Teams Walk 5% spandex Effective 8/26/14 - Per requests from our customers, we are now manufacturing this sock with a slightly larger calf. This was a requested feature from many reviewers and we are happy to be able to accomodate our customers in any way. Ships fast Style 01 - Sized 9-11 fits shoe sizes 5-12 85% Acrylic/10% Nylon/5% Spandex - Lightweight and Breathable Material Great for walks, runs, team sports and more!