La Sportiva Men's Jackal II Boa Trail Running Shoes

Performance-oriented Mountain Running® shoe over Ultra-Long distances. 

Sole package in common with Jackal II, cushioning and equipped with Infinitoo® technology for less energy expenditure. Protective upper with a precise and enveloping fit, capable of ensuring stability even on the most technical sections of an Ultra Marathon. Two BOA® dials provide and perfect volume adjustment even while running.