Molded TPU inner toe cap for durability. Composite cap (metal free). Waterproof membrane. 200g Thinsulate insulation . Reinforced upper seams. MICROBAN antimicrobial treated lining to counteract odors. New high-performance molded insole. EVA foam midsole reinforced with a composite shank. High density, abrasion resistant and anti-perforation composite outsole (metal free).