Aequilibrium LT GTX Black/Yellow | 44.5

At a mere 525 grams per boot (size 42 EU), the Aequilibrium LT GTX sets a new standard for lightweight technical footwear. Built for demanding alpine environments, this boot pairs a GORE-TEX Performance Comfort lining with a Vibram® SpringLug Tech outsole to deliver waterproof breathability and tenacious grip on rock, snow, and mixed terrain.

Overview

The La Sportiva Aequilibrium LT GTX is a semi-automatic crampon-compatible mountaineering boot engineered for technical ascents, via ferrata, and heavy backpacking. Its water-repellent high-tenacity fabric upper with honeycomb Guard™ and protective film shrugs off abrasion, while the PU foam midsole with external Protective Shell System™ balances stiffness and shock absorption. A hook-and-loop lacing system with integrated gaiter keeps debris out and fit secure.

What stands out

• Ultra-light 525 g per boot (size 42 EU) reduces fatigue on long approaches.
• GORE-TEX Performance Comfort offers waterproof, breathable protection.
• Vibram® SpringLug Tech outsole with Impact Brake System™ lugs for confident braking and smooth rolling.
• Semi-automatic crampon compatibility (B2 rated) for technical ice and snow.
• Double Heel™ technology enhances downhill braking and stride efficiency.
• Ergonomic 5mm footbed cushions and supports under heavy loads.

Technical details

• Upper: Water-repellent high-tenacity fabric with honeycomb Guard™ and protective film.
• Lining: GORE-TEX Performance Comfort.
• Midsole: Half-crampon compatible, PU foam with external Protective Shell System™.
• Outsole: Vibram® SpringLug Tech rubber tread with Impact Brake System™ lugs.
• Footbed: La Sportiva Ergonomic 5mm.
• Crampon Compatibility: Semi-automatic (B2 rated).
• Lacing System: Hook and loop with integrated gaiter.
• Weight (per boot): 525 g (size 42 EU).
• Intended Use: Technical mountaineering, via ferrata, heavy backpacking.
• Flexibility: Medium-stiff.
• Waterproofing: Yes (GORE-TEX Performance Comfort).
• Colour: Black / Yellow.
• Size (EU): 44.5.
• Size (US Men's): 11.
• Size (UK Men's): 10.
• Gender: Unisex.
• Technology: Double Heel™ for enhanced braking and smooth rolling.

Our verdict

The Aequilibrium LT GTX delivers exceptional performance for alpine adventurers who demand lightweight agility without sacrificing protection or support. Its innovative design and premium materials make it a top choice for technical mountaineering and long approaches.