The La Sportiva Jackal II BOA is a high-performance mountain running shoe for ultra-long distances. It features the scientifically tested and proven PerformFit™ Wrap powered by the BOA® Fit System for a fast, effortless precision fit. Dual Dial BOA® on the protective upper in combination with a double 3-layer microfiber closure flap ensure a perfect zonal adjustment across the foot for maximum heel hold. This increases stability and reduces landing impact in the most technical sections of an ultra-marathon.

FEATURES

• Innovative dual density EVA sole / midsole package, one more cushioning and one capable of ensuring greater stability. It is equipped with Infinitoo ™ technology, two internal shock absorbing polyurethane pads with high energy return.
  
• Dual Dial BOA® Fit System: maximum heel hold and optimal volume adjustment on the front
  
• Double closure flap in 3-layer microfibre to ensure tightness and flexibility at the same time
  
• Technical Fit dedicated to long distance performance
  
• SpiyralFit tongue and collar construction in highly elastic multilayer Ariaprene: protects against impacts and the entry of debris, ensuring high breathability

SPECIFICATIONS
Upper: Sandwich mesh (toe and tongue) thermo-adhesive TPU reinforcements side panels in mono-filament Nylon collar in stretch jersey
Lining: Mesh with high abrasion resistance
Midsole: EVA with Infinitoo™ Technology rock-shield in high density EVA additional internal cushioning platform 
Sole: FriXion® White with Impact Brake System
Weight: 300 gr (½ pair)
Drop: 7mm