CARGO Nubuck Leather Upper with Mesh Trim Hi-Comfort KBX Gel Insole Fully Lined with PU Footbed 300 Degree C Resistant Composite Toe Cap Kevlar Protective Midsole Waterproof Sock Membrane Anti-Static SRC Slip Resistant Coefficient Oil And Acid Resistant Sole Shock Absorbing Heel Description: The Cargo Maxima Metal Free S3 HRO Safety Boot has a nubuck leather upper with black mesh trim for breathability. It has a fully lined comfort footbed. This S3 boot is waterproof, has a composite toe cap and a kevlar midsole, making it extremely lightweight and suitable for all weather. It is also antistatic and has a shock-absorbing heel with patented support section. Its sole has HRO approval 300 degrees C heat resistance emergency contact only and is also oil/acid-resistant. It meets the maximum SRC slip resistant safety standard. Safety Standard: ENISO 20345 S3: WR HRO, SRC