La Sportiva Olympus Mons S Mountaineering Boots - Yellow/Black, Size 42.5

The La Sportiva Olympus Mons S is a professional double mountaineering boot designed for extreme high-altitude expeditions and polar environments. Engineered to withstand temperatures down to -60°C, this boot combines cutting-edge insulation with robust construction for maximum protection and performance in the most demanding conditions.

Advantages

Exceptional warmth and durability for extreme cold. The double boot system features a removable inner boot with Primaloft® Gold Insulation Aerogel in the toe box and Primaloft® Silver Insulation, ensuring superior thermal efficiency. The outer boot is made from water-repellent Cordura® with heat-sealed reinforcements and a PU TechLite™ rand for abrasion resistance. The BOA® Fit System provides precise, quick lacing on the lower part, while a Velcro strap secures the upper. The Vibram® Litebase outsole with Impact Brake System™ offers reliable traction on ice and snow.

Suitable for

• High-altitude mountaineering above 7,000 meters
• Polar expeditions and extreme cold environments
• Technical ice climbing and mixed terrain

Key specifications

• Construction: Double boot (outer + removable inner)
• Outer material: Water-repellent Cordura® with heat-sealed reinforcements
• Inner boot: High-insulation PE foam, aluminum layer, water-repellent Cordura®
• Insulation: Primaloft® Gold Aerogel (toe), Primaloft® Gold (outer), Primaloft® Silver (inner)
• Closure: BOA® Fit System (lower), Velcro strap (upper), fast-lacing inner
• Midsole: Carbon fiber insulating insole, Honeycomb Tech 3mm carbon structural insole
• Outsole: Vibram® Litebase with Impact Brake System™
• Crampon compatibility: Automatic (step-in)
• Temperature rating: Down to -60°C
• Fit: Expedition Fit
• Color: Yellow/Black
• Size: 42.5 EU

Recommendations

For extreme cold and high-altitude expeditions, the Olympus Mons S is the benchmark. Ensure proper fit with expedition-weight socks. Compatible with automatic crampons for secure footing on ice.