La Sportiva Olympus Mons S High-Altitude Mountaineering Boots - Yellow/Black Size 43

The La Sportiva Olympus Mons S is a professional double mountaineering boot designed for extreme high-altitude expeditions up to 8000 meters. Engineered to withstand temperatures below -30°C, this boot combines cutting-edge materials and technologies to provide maximum warmth, protection, and performance in the harshest environments.

Advantages

Exceptional insulation with a removable inner boot featuring an aluminum thermal barrier and high-insulation PE foam. The outer boot integrates a waterproof gaiter with a waterproof zipper and Cordura® stretch fabric, ensuring complete protection against snow and moisture. The double Boa® Fit System allows precise and quick adjustment for both inner and outer boots, enhancing fit and comfort. The Vibram® Litebase outsole with Impact Brake System delivers reliable traction on ice and mixed terrain, while the carbon fiber honeycomb midsole provides insulation and stability.

Suitable for

• 8000-meter peak expeditions (Everest, K2, etc.)
• Extreme cold mountaineering and ice climbing
• High-altitude winter ascents

Key specifications

• Double boot construction with removable inner boot
• Automatic crampon compatibility (step-in)
• Outer gaiter: water-repellent Cordura® stretch fabric with waterproof membrane
• Outer shell: high-tenacity nylon, PE, EVA, carbon fiber
• Inner boot: high-insulation PE foam, aluminum layer, Cordura®
• Lacing: double Boa® Fit System (inner and outer)
• Midsole: carbon fiber honeycomb insulation, PU
• Outsole: Vibram® Litebase with Impact Brake System
• Insulation rating: extreme cold (suitable for -30°C and below)
• Fit: expedition fit, precise
• Color: yellow/black
• Size (EU): 43
• Waterproofing: integrated waterproof gaiter
• Gaiter closure: waterproof zipper
• Shell reinforcement: anti-abrasion zones
• Thermal barrier: aluminum layer in inner boot

Recommendations

For extreme altitude expeditions, the Olympus Mons S is the benchmark. Ensure proper break-in and always pair with compatible automatic crampons. The double Boa system allows fine-tuning even with gloves.