Check the listing for details. Caterpillar Men Diagnostic Hi Waterproof Thinsulate Steel Toe Work Boot Dark. Color: Dark Beige, Size: 7 M, Condition: New with box. Listed at 169.00 USD. A brawny boot, this style can take a beating. The Diagnostic Hi Waterproof is a steel toe work boot that is built from the ground up and powered by ERGO, a comfort system that is engineered to integrate stability, flexibility, and comfort. This 6” boot is anatomically accurate to deliver on maximum comfort and continue to provide the durability expected with the Cat brand. The Diagnostic Hi offers industry rated steel toe and electrical hazard protection, and a best-in-class slip-resistant outsole. It’s waterproof and insulated with 200 grams of thermal technology, guaranteeing you stay dry, warm, and comfortable. From all over protection to comfort throughout, this style delivers on everything you need in a work boot.