The Jackal II Boa is the ultimate high-performance mountain running shoe designed to take on distances ranging from sky/ mountain running up to long ultra distances across rough, technical terrain.

The Jackal II Boa shares the same sole package as the Jackal II which is equipped with Infinitoo cushion technology for less energy expenditure but long term support and comfort. The protective, eco-friendly upper with Boa lacing system allows an incrediblly precise and secure fit - it ensures stability even on the most technical sections of trail. The Boa also allows quick adjustment on the move.

The Boa version of the Jackal II, although the same length wise, is slightly narrower and lower in volume throughout the forefoot. This makes them the perfect choice for racier or more technical terrain, effectively utilising this fit and the Boa system to ensure the perfect, dialled in fit for ultra-precise movement.

If you are regular Jackal I wearer, we advise sizing up half a size for the Jackal II Boa and Jackal II.

La Sportiva footwear size chart

Features: 

• Balanced fit and unencumbered flexibility via the Double BOA® Fit System in combination with dynamic straps for maximum heel and forefoot adjustability
• Innovative combination in the midsole of EVA and Infinitoo™ PU inserts (10mm heel and 5mm forefoot) for the perfect balance of long-distance cushion and trail stability
• FriXion® XF 2.0 Outsole (White "X") With All-Terrain Tread is Super Sticky With Impressive Grip On All Types Of Terrain
• Spiyralfit Tongue and collar construction with multilayer Ariaprene protects against heel impacts and debris entry while providing high breathability

Specifications: 

• Uppers: Sandwich mesh in recycled material + thermo adhesive TPU reinforcements (like Jackal II) + Flap in multilayer microfibre + Ariaprene tongue and collar 
• Lining: Abrasion-resistant mesh in recycled material
• Footbed: Ortholite® Hybrid Mountain Running Ergonomic 4mm
• Midsole: EVA with Infinitoo™ Technology + rock-shield in high density EVA + additional internal cushioning platform
• Sole: Dual compound FriXion XF 2.0 (White), Impact Brake System 3.5mm lugs provide enhanced traction
• High volume/wide fit designed for long use during endurance competitions
• Weight: 300g (single shoe size 42)
• Drop: 7mm