Muck Boots Chore Oil, Chemical & Slip Resistant Men's Rubber Work Boot Rubber Importado Vibram sole Shaft measures approximately 15" from arch Platform measures approximately 0.5 inches Boot opening measures approximately 15" around Chore V-Wave outsole with SR Slip-resistance Compound offers improved traction on slippery surfaces, including steel and ceramic tile 100% waterproof work boots; Honeywell proprietary RDR compound is resistant to most oil-based fluids and other chemicals 5 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to your foot shape to resist blisters and chafing Breathable Airmesh lining wicks away humidity and perspiration, and allows air to travel throughout the boot; comfort rated from subfreezing to 65 F/18 C Steel shank for support; triple toe and quadruple rubber heel reinforcement; non-safety soft toe; rear pull loops for easy on/off