La Sportiva Aequilibrium ST GTX Mountaineering Boots - Yellow/Black (EU 41.5)

The La Sportiva Aequilibrium ST GTX is a technical mountaineering boot designed for demanding alpine terrain. Combining lightweight construction with robust support, it features a GORE-TEX Performance Comfort membrane for waterproof breathability and a Vibram® SpringLug Tech sole with Impact Brake System for superior traction on mixed surfaces. The semi-automatic crampon compatibility (B2 rated) makes it ideal for glacier travel and technical ascents.

Advantages

Double Heel™ technology enhances downhill performance and stability, while the Impact Brake System™ lugs provide exceptional grip on steep, loose terrain. The high-tenacity nylon upper with Honey-Comb Guard and TPU reinforcements offers durability without excess weight. An integrated hook-and-loop lacing system ensures a precise, secure fit.

Suitable for

• Technical mountaineering
• Glacier travel
• High-altitude trekking
• Via ferrata

Key specifications

• Waterproof membrane: GORE-TEX Performance Comfort
• Sole: Vibram® SpringLug Tech with Impact Brake System
• Crampon compatibility: Semi-automatic (B2 rated)
• Upper: Water-repellent high tenacity Nylon 60.6 with Honey-Comb Guard and TPU reinforcements
• Midsole: Semi-cramponable Nylon and carbon fiber
• Lining: GORE-TEX Performance Comfort
• Weight (per pair): 1260 g (approx. EU 42)
• Lacing: Integrated hook and loop
• Fit: Ergonomic, precise
• Ankle support: High-cut
• Footbed: La Sportiva Ergonomic
• Protective rand: Full rubber rand

Recommendations

For optimal performance, pair with semi-automatic crampons and gaiters. Break in gradually on moderate terrain before technical use.