Bushido II GTX is the GORE-TEX invisible fit membrane version of the classic Mountain Running Bushido model. Dedicated to the world of skyruninng races and designed for winter use, elle is super-light, grippy, aggressive and designed to guarantee perfect stability in support on tous all types of off-road terrain. Thanks to the STB Control construction, the TPU skeleton placed laterally on the upper descends to wrap around the mid-sole and stabilize the shoe. This solution provides better shoe envelopment and greater overall stability thanks to the synergistic work of the upper and midsole, as well as making the product lighter, avoiding overweight stabilizing inserts in the central part of the shoe. The FriXion Red composite sole offers a variety of support surfaces. The rounded shape of the external cleats, which protrude to the side to touch the midsole, creates a progressive angle of support with the terrain while maintaining stability even when the foot is twisted to the extreme. This means you can run in complete safety even on the most technical terrain with roots, stones and branches. Maximum support and bandaging on the medial part of the foot, freedom of movement and comfort in the toe area. The result is a shoe that, in true La Sportiva style, offers new solutions for the most demanding runners, rewriting the rules of the game with a construction never before seen in footwear from trail running.Upper: breathable air-mesh fabric, thermoplastic reinforcements, TPU HF medial skeleton on rip-stop panels Lining: GORE -TEX invisible fit Inter Sole: EVA with compression and stability control system Sole: Frixion Red Footbed: Ortholite Ergonomic 4 mm Drop: 6 mm Weight: 280 gr / ½pa Sizes: 36-43 half sizes included