Z-Trail gets rid of 70% of your usual sport sandal’s weight and bulk. The super flexible sole lets your feet bend and move naturally. Tubular quick-dry webbing (now made with nylon from recycled water bottles) adds comfort, and adjustable heel and instep straps give a secure fit. The updated triple-layer FeelLiteTM sole packs even more protection and trail-ready traction into a 5.4 ounce (M9) package. For sandals add about 1 cm to your foot legth and select the size closest to that measurement.