The Speedmachine 90 from Nordica is a great ski boot for the intermediate to advanced skier who has a medium to narrow forefoot and calf volume. Nordica's Tri-Force Construction uses stiffer plastic across the sole and spine of the shell that improves your power transmission and responsiveness. The Precision Fit Liner feels soft and plush across your foot and Primaloft Insulation keeps your feet nice and toasty on frigid days. The shell is easily customizable by an Authorized Nordica Dealer who has a special lamp that they would use to heat the shell, then the fitter would use an air compressor to pull out the shell in that specific area for a truly dialed in fit. If you are an intermediate skier looking to add more power to your skiing, or a mellow advanced skier looking for control, the Nordica Speedmachine 90 would be a great option for you.