evo.com | Nordica Alpine Ski Boots > The Nordica Speedmachine 3 110 X Ski Boots pair a light, rigid frame with softer plastic for strong energy transfer, with a smooth 110 flex and medium-volume fit that remains comfortable all day. Infrared Fit Technology shell customization via provides the finishing touch to a boot built for all mountain ripping from first chair to last call. ISO 5355 Alpine High Traction Soles Tri-Force Construction A modern lightweight design with a hard PU or Triax spine and chassis is combined with a softer PU or Triax foot wrap and extra soft material over the instep. Allows for better wrapping around the foot and customization without losing rigidity. 4 Micro-Adjust Aluminum Alloy 35mm Velcro Strap Precision Fit with PrimaLoft(R) | Nordica Speedmachine 3 110 X Ski Boots 2023 - 29.5 /Plastic