Chore Pro Cool work boots features an XpressCool lining to keep feet cooler and more comfortable in temperatures sub freezing to 95 F. Full rubber coverage is 100% waterproof. Color up allows boots to be multifunctional for workers who are also outdoor enthusiasts. Steel toe impact protection and steel shank for additional arch support. Meets ASTM F2413-11 M I/75 C/75 EH. Available sizes: Men's 5 / Women's 6, Men's 6 / Women's 7, Men's 7 / Women's 8, Men's 8 / Women's 9, Men's 9 / Women's 10, Men's 10 / Women's 11, Men's 11 / Women's 12, Men's 12 / Women's 13, Men's 13 / Women's 14, Men's 14 / Women's 15. Material: Rubber, Neoprene.