The Lange SX 90 is a fantastic option for the strong intermediate to advanced level skier who has a medium width forefoot and medium to narrow leg shape. A Mono Injected Shell allows for a skilled bootfitter to stretch the boot to match your foot shape if needed. A Natural Stance is more upright to deliver more efficient energy transmission to your skis with less fatigue. Lange's Easy Entry Concept has a softer plastic insert across the top of your foot that makes it very easy for your foot to slide in and out of. The Comfort Liner is loaded with anatomically correct padding to keep your foot supported and comfortable all day on the mountain, while the Custom Tongue will start to shape to your leg after only a few minutes of being on your foot. If you want a boot that has a medium width fit across the forefoot that offers a strong mix of performance and comfort, the Lange SX 90 is a great option.