The ultimate in comfort and safety. More flexible and longer lasting than PVC or Rubber due to its air bubble structure which provides air circulation. PU keeps feet hot in winter and cool in summer. Steel toecap and steel midsole antistatic and SRC slip rated. Anti-static footwear. CE certified. Cold insulation. Energy absorbing seat region. Oil resistant outsole. Steel midsole. Waterproof. 200 joule steel toecap. Slip resistant outsole (SRC).