Made of a unique microfoam polyurethane compound Purofort Thermo+ boots provide: Outstanding thermal properties, impact and shock resistance, chemical resistance, weight savings - 35% lighter than conventional boots, durability - lasts 2-3 times longer. 14” green with brown sole. Rated to -50ºC with no liner required. CSA Grade 1 Steel Toecap and Midsole. Complies with ASTM F2412-05 Standard. Static dissipative soles. Anti-bacterial flat lining. Resistant to mineral, animal and vegetable oil & fats, blood, disinfectants, manure, solvents and various chemicals. Oil resistant outsole. Energy absorbent. Deep, self cleaning lug style rockered sole. Reinforced ankle protection.