This 6" Slip-on boot features 100% full-grain light brown leather with an easy off/on design. The TPU (Thermoplastic Polyurethane) soles & PU (Polyurethane) midsoles feature multi-directional lugs to provide increased traction on all surfaces as well as resistance to oil & acid. Removable foam inserts adds extra padding on top of our shock absorbing midsoles.. Slip Resistant - MARK II Machine tested slip resistant on oil, acid & water.. Anatomic Support System - Redbacks unique Anatomic Sole cradles the foot to reduce arch sagging and prevents foot strain, fatigue and related leg and back pain.. Electrical Hazard Safe - Our boot meets and exceeds ASTM F2413-11 standards for Electrical Hazards.. Impact/Compression - Steel Safety Cap meets and exceeds ASTM F2413-11 standards for Impact & Compression.. Commonly used by: Fire, Auto Tech.