These are all-mountain ski boots for intermediate to advanced skiers, the Flex 100. The X PRO series is a very popular model due to its excellent fit and operability. 〈Specs〉 Size: 25.5cm Last Width: 100~106mm Sole Length: 306mm Flex: 100 Weight: Approximately 2070g (per foot) Shell Construction: 360° Custom Shell (Thermoformable) Liner: My CustomFit 3D Performance Liner (Thermoformable) Buckles: Aluminum 4 Buckles Power Strap: 35mm Velcro Strap Suitable Level: Intermediate to Advanced Usage: Wide range from carving to all-mountain I purchased these used and used them twice, but they didn't fit my feet, so I'm selling them. Although there are some minor scratches and dirt, they are in good condition and do not affect use. Regarding Usage Used only twice, so the liner has hardly any wear, and the shell and buckles show little signs of use. The soles have light scuffs from normal use, but there are no functional problems. Overall, I think they are in good condition. Size: 25 ~ 25.5cm Flex/Stiffness: 100 ~ 109 Type/Style: All-Mountain, All-Round, Freeride/Freestyle Size: 25.5cm