La Sportiva Aequilibrium Speed GTX Mountaineering Boots - Black/Yellow - Size 47

Alpine climbers moving fast over mixed terrain need a boot that balances precision, protection, and low weight. The La Sportiva Aequilibrium Speed GTX delivers exactly that, combining a semi-cramponable sole with a waterproof GORE-TEX membrane and an integrated gaiter for seamless performance on technical routes, glaciers, and via ferrata. The double construction pairs a traditional inner boot with a stretch outer gaiter, keeping debris out while allowing a full range of motion. A Vibram® SpringLug Tech outsole with Impact Brake System provides reliable grip on rock, snow, and ice, while the nylon and carbon midsole with PU foam offers the stiffness needed for front-pointing without sacrificing walking comfort. The water-repellent high-tenacity fabric upper is reinforced with Honey-Comb Guard™ and a TPU anti-abrasion film, ensuring durability in demanding alpine environments. This size 47 model comes in a black and yellow colourway, ready for fast and light ascents.

Key specifications

• Product type: Mountaineering boots
• Waterproofing: GORE-TEX Performance Comfort
• Crampon compatibility: Semi-automatic (B2 rated)
• Upper: Water-repellent high-tenacity fabric with Honey-Comb Guard™ and TPU film
• Midsole: Semi-cramponable nylon and carbon with PU foam
• Outsole: Vibram® SpringLug Tech with Impact Brake System
• Closure: Integrated elastic gaiter with hook-and-loop; traditional lacing for inner boot
• Footbed: La Sportiva Mountain Footbed
• Weight: approx. 530 g per boot (1.06 kg per pair)
• Size: 47 EU
• Colour: Black / Yellow

Why choose it

The Aequilibrium Speed GTX is engineered for alpinists who demand speed without compromising protection. Its semi-automatic crampon compatibility allows use with C2 crampons for technical ice and mixed climbing, while the integrated gaiter eliminates the need for separate gaiters, reducing weight and streamlining your kit. The GORE-TEX membrane keeps feet dry in wet snow and slush, and the Vibram outsole ensures confident footing on rocky approaches and icy slopes. The double construction provides a precise fit and excellent ankle mobility, making it a versatile choice for everything from glacier traverses to via ferrata.

Ideal use cases

• Technical mountaineering and alpine ascents
• Fast and light climbing on mixed terrain
• Glacier travel and ski mountaineering approaches
• Via ferrata and high-altitude trekking
• Winter mountaineering in moderate conditions

Good to know

The boot features moderate insulation, optimized for speed and lighter conditions rather than extreme cold. The integrated gaiter is elastic and breathable, while the inner boot provides a traditional lacing system for a customized fit. La Sportiva's Mountain Footbed offers support and comfort for long days in the mountains. This model is part of the Aequilibrium family, known for balancing performance and weight. Available in size 47 EU, colour black/yellow.