Rocky Worksmart #RKK0403 Men。Rocky boots with \"RWP ST\" typically mean Rocky WaterProof, Steel Toe, featuring durable leather, guaranteed waterproofing, ASTM protective toes (often Steel), slip-resistant outsoles, and comfort features like polyurethane footbeds, with variations in height, insulation, and specific outsole tech depending on the model (e.g., MobiLite, BlizzardStalker). Here are common specifications you\'ll find: Key Features Waterproof (RWP): Guaranteed Rocky Waterproof construction. Steel Toe (ST): Meets ASTM F2413 standards for protective toe (I/75 C/75). Slip Resistant: Oil-resistant and multi-directional outsoles for traction. Material: Full-grain leather, sometimes with high-denier nylon for abrasion resistance. Construction: Often Goodyear welt or cement construction for durability. Comfort: Polyurethane or specialized foam footbeds (like Energybed LX), fiberglass/steel shanks, padded collars.