La Sportiva Aequilibrium ST GTX Mountaineering Boots - Lime Punch/Carbon - Size 42

The La Sportiva Aequilibrium ST GTX is a high-performance mountaineering boot designed for technical terrain, glacier travel, and high-altitude trekking. Combining a lightweight construction with robust protection, it features a GORE-TEX Performance Comfort lining for reliable waterproofing and breathability. The boot is semi-automatic crampon compatible (C2) and built with a water-repellent nylon upper reinforced with abrasion-resistant zones and HoneyComb Guard™ technology. The Vibram® SpringLug Tech outsole with Impact Brake System ensures superior traction on mixed surfaces, while the Double-Heel™ design improves braking and walking comfort. With a medium-stiff flex and 3D Flex System Evo™ ankle support, the Aequilibrium ST GTX delivers stability and precision on demanding ascents and descents.

Advantages

Lightweight yet durable construction with full rubber rand protection. GORE-TEX membrane keeps feet dry without sacrificing breathability. Semi-automatic crampon compatibility allows use with C2 crampons for technical ice and mixed terrain. The Double-Heel™ and Impact Brake System enhance downhill control and reduce fatigue. Ergonomic footbed and TPU insert provide excellent support and shock absorption.

Suitable for

• Technical mountaineering and alpine climbing
• Glacier travel and high-altitude trekking
• Mixed terrain and snow-covered trails

Key specifications

• Upper: Water-repellent Nylon 60.6, abrasion-resistant zones, HoneyComb Guard™
• Lining: GORE-TEX Performance Comfort
• Midsole: Half-crampon compatible rubber shell, PU foam, TPU insert
• Outsole: Vibram® SpringLug Tech with Impact Brake System
• Footbed: La Sportiva Ergonomic
• Ankle Support: 3D Flex System Evo™
• Heel Design: Double-Heel™
• Rand: Full protective rubber rand
• Lacing: Hook lacing with integrated bellows
• Weight: 630 g per shoe (size 42)
• Color: Lime Punch / Carbon
• Size: 42 EU
• Gender: Unisex
• Flexibility: Medium-stiff

Recommendations

For optimal performance, pair with semi-automatic crampons and gaiters. Break in the boots on moderate terrain before technical use. Suitable for experienced mountaineers seeking a lightweight, versatile boot for alpine objectives.