La Sportiva Jackal II Trail Running Shoes Version II of the model dedicated to the world of Ultra races and long-distance training, characterized by exceptional cushioning, thanks to the innovative Infinitoo high energy return technology. New materials for the upper with Eco-Friendly contents and new constructions for the heel and tongue that ensure grip, enveloping and breathability, significantly reducing its weight. Recycled Sandwich Mesh Upper The upper of the Jackal II has been constructed from a recycled sandwich mesh that encases each foot in breathable comfort. The mesh allows air to fully permeate the entire upper, providing a constant supply of fresh, cool air while simultaneously forcing out hot muggy air. No-sew Thermo-adhesive TPU reinforcements add durability throughout alongside a recycled abrasion-resistant mesh lining for added breathability and long-lasting wear. This highly abrasion-resistant upper will prevent any damage from being caused, which wi