La Sportiva Ridgeline Mountaineering Boots - Men's Black 47.5. The super-durable roughout leather upper and Vibram Fire & Ice sole make it worthy for burly treks with heavy packs over rugged terrain in extreme conditions. Specifications for La Sportiva Ridgeline Mountaineering Boots - Men's: Manufacturer: La Sportiva Gender: Male Age Group: Adults Men's Shoe Width: Wide Color: Black Footwear Type: Boots Activity: Mountaineering Weight: 32.1 oz Footwear Closure: Laces Fabric/Material: Leather Footwear Upper Fabric/Material: 3mm Idro-Perwanger Roughout Leather Insole Material: 8mm MtnFlex Lining Material: Abrasion Resistant 3D Air-Mesh Outsole Material: Vibram Midsole Material: PU Air Cushion Features of La Sportiva Ridgeline Mountaineering Boots - Men's Heat resistant sole with a rubber compound that is resistant to 482f and a glue that is resistant to 215f. Heat resistant heel and toe counters for better protection in wildland firefighting conditions. Minimum 8 inch height meets federal standards for wildland firefighting. Laces and exterior threads are fire resistant made from Nomex. Interior air-mesh liner is highly breathable for long days in the field. Not intended for front-line wildfire work Package Contents: La Sportiva Ridgeline Mountaineering Boots - Men's La Sportiva 31L-999999-47.5: Ridgeline Mountaineering Boots - Men's Black 47.5