Guy Cotten polyurethane steel toe boots, Size 10, Green. Very comfortable and light weight Polyurethane Boots with steel toe cap for use on cold surfaces. Much lighter than PVC and Rubber. Lasts 3 to 4 times longer. Much more comfortable. Thermo-insulating (cool in summer and warm in winter). Better resistance to acids, oils, fats, and chemical products. Superior slip resistant.