Designed for long hikes with a heavier backpack, this model combines the best technologies and sustainable materials with comfort, support and stability.This shoe is the new green benchmark in the trekking world thanks to the innovative Perspair® fabric which is high performance, lightweight and breathable.This fabric is made from a single-piece upper with 45% recycled yarns and combines functionally different zones with abrasion-resistant PUTEK inserts.This boot features the new Gore-Tex Flux membrane, which contains 98% recycled fabrics, and a Vibram Ecostep Evo compound sole, with 30% recycled rubber.