La Sportiva Aequilibrium ST GTX Mountaineering Boots - Yellow/Black, Size 44.5

The La Sportiva Aequilibrium ST GTX is a high-performance mountaineering boot designed for technical terrain, glacier crossings, and demanding treks. Combining lightweight construction with robust protection, it features a GORE-TEX Performance Comfort lining for reliable waterproofing and breathability. The upper is made from water-repellent high tenacity Nylon 60.6 with HoneyComb Guard™ reinforcements, ensuring durability without excess weight. The semi-cramponable midsole (B2 rated) incorporates a 6mm Nylon plate with carbon fiber, PU foam, and TPU inserts for excellent support and shock absorption. The Vibram® SpringLug Tech outsole with Impact Brake System™ provides superior traction on mixed surfaces. The 3D Flex System Evo™ ankle support and Double Heel™ geometry enhance stability and precision on uneven ground. Ideal for mountaineering, via ferrata, and alpine trekking.

Advantages

Lightweight yet durable construction; excellent waterproofing and breathability; superior grip and braking on steep terrain; precise fit and ankle support for technical moves; semi-automatic crampon compatible.

Suitable for

• Technical mountaineering
• Via ferrata
• Glacier crossing
• Demanding trekking

Key specifications

• Upper: Water-repellent high tenacity Nylon 60.6 with HoneyComb Guard™
• Lining: GORE-TEX Performance Comfort
• Midsole: Semi-cramponable, 6mm Nylon with carbon fiber, PU foam, TPU inserts
• Outsole: Vibram® SpringLug Tech with Impact Brake System™
• Crampon compatibility: Semi-automatic (B2 rated)
• Lacing: Traditional with hooks and loops
• Ankle support: 3D Flex System Evo™
• Heel: Double Heel™ geometry
• Footbed: La Sportiva Ergonomic
• Weight per boot: approx. 650 g
• Color: Yellow / Black
• Size: 44.5 EU

Recommendations

For optimal performance, pair with semi-automatic crampons and gaiters. Suitable for experienced mountaineers seeking a lightweight, technical boot for alpine ascents and mixed terrain.