Step into a revolution — the easy entry and high performance revolution of our innovative Step In design. Made for skiers looking for a medium-volume fit and modest flex, the women's Rossignol Vizion 4B Pro 80 ski boots feature a ground-breaking overlap shell design that opens wide in the back for unparalleled slip-on ease thanks to an innovative spoiler and spine mechanism. The system creates wide articulation at the cuff and complete locked-in support for precise power transfer and full downhill performance with unmatched ease of use. Just slip in, buckle up and ski.<br /> <br /> Medium Volume Fit<br /> Medium-Volume fit features a 100mm last for a performance feel that balances comfort and control<br /> <br /> Slip-On Ease, Full Alpine Performance<br /> Step In technology is a revolutionary new overlap boot design that delivers the highest levels of ski performance with first-of-its-kind, hands-free entry and exit.<br /> <br /> Locked-In Performance<br /> Our Spine Link Mechanism is the magic that makes Vizion the easiest entry and exit alpine boots on the market. When locked, the mechanism holds the Steel Spine in a traditional ski position. When released, it allows the boot to open wide for slipper-like entry and exit. <br /> <br /> Full Support, Easy Entry<br /> The Bi-Injected Spoiler features rigid PU material for the support and energy transmission of a traditional alpine boot, while its soft rubber sides wrap to form a tight seal. Extended backwards articulation makes for incredibly easy boot entry and exit.<br /> <br /> Easy-Open Cuff<br /> A unique Double Buckle on the lower cuff effortlessly unlocks and releases the spoiler for smooth, slipper-like entry and exit <br /> <br /> Better Skiability, Better Fit<br /> Dual Core technology provides targeted power transmission and shell wrapping, resulting in livelier rebound, response and control<br /> <br /> Full Custom Comfort, Easy Entry, Full Support<br /> Our True Form Step-In Liner offers the fit and feel of a traditional custom fit alpine liner with key features that allow wide access for easy entry and exit while retaining the support needed for aggressive skiing<br /> <br /> Insulated Warmth and Support<br /> Thinsulate™ Stretch insulates while providing enhanced foot support for better skiability<br /> <br /> Optimized Fit and Warmth<br /> Our Seamless Toe Box eliminates pressure points for optimized out-of-the-box fit and reduces heat loss by 20%<br /> <br /> All-Terrain Grip<br /> Pre-mounted GripWalk® soles feature a rubber tread and rockered toe for a more natural walking motion and increased traction