La Sportiva Spantik Mountaineering Shoes - Men's Yellow/Silver 41 Medium. This step-in crampon-compatible boot excels on steep terrain without sacrificing walkability. The thermo-molded inner boot and one-handed closure system provide insulation and convenient lacing. Specifications for La Sportiva Spantik Mountaineering Shoes - Men's: Manufacturer: La Sportiva Gender: Male Age Group: Adults Men's Shoe Width: Medium Boot Style: Mountaineering Color: Yellow/Black Footwear Type: Boots Activity: Mountaineering Weight: 44.5 oz Footwear Upper Fabric/Material: PolyMesh / 1.5mm PU TechLite rand / Vibram rubber toe rand Insole Material: 5 mm Thermal Structure Carbon Fiber Aluminum Insulation Water Resistance Level: None Outsole Material: Vibram Montagna Midsole Material: TPU Dual-Density Micropore EVA Footwear Last: Nuptse Available Sizes: Mens EU 38 - 47 Features of La Sportiva Spantik Mountaineering Boot - Men's: Inner boot features micro-perforated thermo-formable PE water-repellent Lorica with Antiacqua external coating Outer boot features PU-Tech transparent PU-coated embossed Benecke CeraCom PUR leatherette water-repellent Lorica with Antiacqua external coatin Vibram rubber rand Molded TPU ankle backstay reinforcement PE micro-cellular thermal insulating closed cell foam lined with a thermo-reflective aluminum facing coated with anti-abrasion flockingcoated and anti-abrasion flocking Gaiter is made with breathable Cordura and Kevlar anti-perforation fabric Package Contents: La Sportiva Spantik Mountaineering Shoes - Men's La Sportiva 296-YelSv-40.5: Spantik Mountaineering Shoes - Men's Yellow/Silver 40.5 Medium La Sportiva 296-YelSv-41: Spantik Mountaineering Shoes - Men's Yellow/Silver 41 Medium La Sportiva 296-YelSv-41: Spantik Mountaineering Shoes - Men's Yellow/Silver 41 Medium