Size 4, Olive, Servus Max, Seamless, Rubber Boots, TDT Technology, Injection Molded, 100% Waterproof To Ensure Workers Feet Are Dry & Comfortable, Outsole Perimeter Is Formulated For Tough, Long Wearing Support, Centersole Is Dual Compounded For Cushioning, Long Wear & Traction On Slick Surfaces, Steel Shank Is Longer, Wider & Thicker For Outstanding Arch Support, Removable Foot Form Contour Cushion Insoles Provide All Day Comfort & Support, Open Pattern Outsole Design Self Cleans Liquid & Debris With Every Step, Helping To Prevent Slip & Trip Hazards.