Soxnet Eco Friendly Heavy Weight Recycled Cotton Thermals Boot Socks 2-Pack TeeHee Eco Friendly Recycled Cotton Thermals Boot Socks Thermal Socks designed to be worn under boots, direct from the manufacturer. The fully cushioned foot and leg of the shock absorbs impact to make it easier on your feet. Size Guideline : Sizes 9-11 (Shoe Size 6-9), Sizes 10-13 (Shoe Size 7-11) Quality Guarantee: if you have any problems, please contact us and we will do our best and work with you so that you can leave satisfied!