Xero Women's Z-Trail EV Sandals feature updated 10mm FeelLite soles with a middle layer of TrailFoam and an updated dual chevron lug pattern that offers the best combination of comfort, protection, and trail-ready traction while still allowing you to bend, move, flex, and feel the terrain beneath your feet. The Z-Trail EV eliminates 70% of the unnecessary materials used in modern sports sandals and because its soft, tubular quick-dry webbing is made from nylon sourced from recycled water bottles, it's even better for the planet than before!