La Sportiva Nepal Extreme - Men\'s An insulated version of the Nepal Top. Ideal for technical use on all high elevation mountain terrain, it features the innovative triple laminate lining \"Synergy. The insulating Ibi-Thermo footbed gives the boot exceptional insulation from the cold. It is possible to use the step-in crampon system. The new removable EZ FLEX tongue (Patent Pending) gives the option of adjusting the fit, personalized for any foot. The EZ OUT pull loop (Patent Pending) facilitates the unlocking of the lace lock. The new midsole HP3 eliminates any wear and tear problem on the toe-box, using a new combination of high performance technical materials. It features a removable insulating footbed. The ideal mountaineering boot for technical use on high altitude terrain and ice! Features: Upper: 3+ mm water-repellent Idro-Perwanger® leather Lining: PrimaLoft® Gold Insulation Eco - Equivalent to 600 fill power down. Insole: Insulating Ibi-Thermo 9 mm Midsole: 6 mm Polyurethane with crampon attachment on the toe Sole: Vibram® Impact Brake System, easy to resole. Suitable for step-in crampons. Nepal Full Crampon: Suitable for step-in crampons Weight (per pair): 2.80kg  /  4.58lbs Technical Features: Nepal Series: Quality and style “made in Val di Fiemme”, durability and maximum resistance thanks to the use of fine leathers and rubber rands assembled manually in Ziano, at the foothills of the Dolomites. The great classics of mountaineering and hiking updated: new aesthetic lines, the same La Sportiva quality and reliability. Since 1928. Impact Breake System: The innovative system is applied to the sole to absorb negative ground impact, help traction and improve grip downhill. Created and developed by the R&D department at La Sportiva, it offers real advantages during racing by reducing negative ground impact. The unique position of the lugs allows as many of them as possible to come into contact with the ground, for maximum impact absorption. Vibram Sole: Vibram sole to ensure an optimal balance between performance and durability. EZ Out Lacing System: Sling that facilitates and speeds up the release of the lacing block with a single rapid movement. PrimaLoft® GOLD Insulation: A new frontier of blowable synthetic insulations that deliver the fluidity, hand-feel, aesthetics and performance characteristics of natural down. 2D tufts of fiber plumes are fused with silica aerogel, an ultra-lightweight material renowned for its insulative properties. Collectively, these plumes form a loose-fill insulation with enviable compressibility performance and thermal properties equivalent to 600 fill power down. A proprietary finish ensures warmth even in wet conditions: Gold Insulation: The best type of synthetic insulation out there. Developed to suit the needs of the US army. Clo Value of 0.92 - which will provide you with the same amount of warmth as 600 fill-power down would. An Incredible 98% thermal efficiency - Excellent insulation in relation to its weight and thickness  Very breathable - Retains 96% of its warmth when wet. This means that even if you get sweaty, the insulation will protect you from getting cold. Water-resistant - which means that, unlike with down, you won’t get cold if you get wet Extremely Lightweight Eco-friendly - 55% recycled content Bluesign® approved