I just got these boots but I am in-between sizes and ended up getting a bigger size. These are perfect for resort or backcountry skiing or as a 50/50 boot. These have moldable liners that you can custom fit to the shape of your foot for all day comfort. Product description from K2's website: With a 120 flex rating, tech inserts, and a walk mode boasting a 50-degree range of motion, the K2 Mindbender 120 men’s ski boot offers all the performance you’ll need to charge the steeps and rally in the deep. Outfitted with a Precisionfit Pro Tour Liner, a heat-moldable Powerlite Shell, and a Fastfit Instep the Mindbender 120's provides all-day comfort, whether you're ripping laps at the resort or bagging peaks in the backcountry.