The 2011 Tecnica Viva P80 Air Shell Ski Boot is for that woman that is an intermediate all-mountain skier with a 80-70 flex rating this boot can steer you through the bumps and turns with precision. For even more power and strength this boot is uses 3 Density Construction the Phoenix specifically utilizing more hard than soft materials to address power and entry and exit. Also, because comfort and fit are very important in finding a boot the Viva Last liners utilize lasts of women's feet to create the best fitting boots by providing a narrower heel pocket and wider forefoot that offer a well wrapping, anatomic fit. But each Viva Last get's even more specific for providing that perfect fit and this Phoenix series has a 98-100mm (AA - D+ width) and Air Shell Technology that provides instantaneous custom fit with separate forefoot and heel adjustments for maximum unlimited customization depending on the conditions or your performance needs without the need of any tools. Also specific to the Phoenix series is the Delta Force System that combines three components that work together to provide direct power transmission and a smooth progressive flex in two flex settings to adapt to power and rebound flex of the boot. Everything else from this point is just cherries on top to make the boot that much more comfortable and convenient. With even more specific to the female skier anatomy boots collars that have a 3D Flared Design that faithfully follow the shape of the female calf to accommodate the foot better as well as the Calf Adapter with adjustable spoiler allows for best regulation of pressure on the calf. And even a nice Viva Velvet Fur Lining for you slide your foot into each morning.