Muck Boots Chore Oil, Chemical & Slip Resistant Steel Toe Men's Rubber Work Boot Rubber Rubber sole Shaft measures approximately 14" from arch Boot opening measures approximately 16" 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 Rear pull loops for easy on/off; steel shank for support; triple toe and quadruple rubber heel reinforcement; steel toe protects against impacts from above; meets ASTM F2413-11 M I/75 C/75