Never put a foot wrong in a pair of 125mm, fully lined, non safety elastic sided boots with an antistatic TPU outsole that’s heat resistant to 160°C and polyurethane midsole with bumpcap. Boost is a new non-safety shoe from Mack Boots. Leather uppers and elastic sides for easy slip on. Featuring an improved PU Innersole, a PU/TPU sole and a Steel Toe Cap. The antistatic PU-TPU sole is long wearing, light weight, oil, acid, chemical and hydrolysis resistant. The PU-TPU sole is heat resistant up to 160 degrees C. Superior comfort at an affordable price with Maximum Torque Advantage range from Mack Boots.