The Head Raptor R3 RD ski boot is the perfect choice for the professional athlete. An anatomic 93mm last keeps your foot secure in the shell and the Racing Pro liner features an adjustable tongue, optional laces and a racing footbed. By adding or removing bolts on the spine you're able to adjust the flex rating between 120 and 140 and can be further dialed in with Flex performance tuning. Spineflex RD low profile buckles deliver optimum, pinch-free foot wrap for comfort and solid power transfer.