Thermo+ Safety Wellington S5 CI SRC classified. Resistant against low temperatures with heat retaining sole and insulation. Steel toe cap and midsole. Waterproof with antistatic technology and energy absorbing heel. Resistant to temperatures down to –40°c. Resistant to minerals, animal and vegetable oils and fats, blood, manure, disinfectants and various chemicals and solvents. Purofort is up to three times more durable than regular PVC or rubber boots and beats any regular polyurethane boot in the area of comfort, protection and durability.