The 4-QUATTRO SL is the lightest GripWalk hybrid ski boot in its class. A low stand height and flex index of 120 provide the ideal balance of performance and comfort for all skiing pursuits. The shell and cuff are made from Pebax R-new®, produced from renewable, plant-based sources. The shell incorporates an over-injected carbon insert for enhanced precision, energy transmission, and torsional rigidity. The new Alpine Axial Hybrid provides a classic overlap construction allowing easier entry into the boot and enables excellent power transmission and unparalleled control. The Presa® sole has an ergonomic design that guarantees excellent grip when walking and is compatible with GripWalk-certified downhill or ski-touring bindings. Power, precision, and sustainability come together to make the 4-Quattro SL the perfect all-day boot, both on and off-piste.