Lange Banshee Pro Ski Boots 2010: The Lange Banshee Pro Ski Boots are the perfect all-mountain high performer. Featuring Langes classic long, progressive range of flex for more control, power, and versatility through every turn, the Lange Banshee Pro has been specifically tweaked for all-mountain riding to give you the perfect blend of comfort and performance. With a higher, stiffer 110 flex index and narrower 98mm forefoot width, the Lange Banshee Pro Ski Boots are designed for advanced skiers who want a snug fitting ski boot for high performance.