Dalbello Viper 10 Boot - Men's:  The VIPER 10 is a high level performance boot for advancing skill level skiers seeking accurate, anatomic foothold with powerful and precise energy transfer dynamics. Featuring Improved innerboots and Contour 4 Fit Technology architecture to adapt to even the most hard to fit skiers feet. TRUFIT Performer custom fit innerboots provide enduring comfort and warmth.