Amblers deliver a robust metal-free waterproof hi-leg metatarsal safety boot with quick access YKK metal free side zip. TPU Heel Support is provided for Extra Durability and an Injected PU Midsole delivers comfort. - Safety Standard EN ISO 20345:2011 - S3 - Hi-Leg Waterproof Metal Free Metatarsal Safety Boot - Excellent Ladder Grip Outsole and Poron XRD Internal Metatarsal Guard - YKK Metal Free side zip for quick access and release - 200 Joules Fibre Glass Composite Toe Cap - Anti-Penetration flexible composite Midsole - Min 1100N - Energy Absorbent Heel - Removable PU Footbed, Antistatic and Oil resistant Outsole - TPU Heel Support for Extra Durability and Injected PU Midsole and Scuff cap - Internal waterproof membrane - Rubber Outsole Heat Resistant to 300 Degrees