High-quality PVC resins and low-temperature additives provide abrasion resistance and excellent flexibility in cold temperatures. 1.5' of Calf Relief Expansion (CRE) adds comfort. Removable polyurethane contour insole features three layers to wick away perspiration and promote fast drying. 15'H. Men's whole sizes 3-14. NOTE: To convert women's shoe sizes to men's, size down two sizes. Example: Women's size 7 is equivalent to Men's size 5. Tingley Profile Boots, 15H