The World Cup sidewinder ski boot liners are the culmination of 30 years of design refinement and stand out as Sven Coomer’s choice liners. Many skiers search for the perfect turn. Sven sought to design the optimal ski boot liners that could help skiers achieve the feeling of a perfect carve. In order to transfer maximum energy from the leg into the ski, the World Cup Sidewinder features a medial side with stiffened plastic from the outsole up to the cuff, preventing ankle collapse. These liners are the highest performing ski boot liners in the world for on piste and in the race course. The interior has a neoprene tongue and the rest is stitched with the highest quality leather, sourced from the same tannery that supplies Ferrari, so going fast is in these liners’ DNA. For skiers seeking stability and a true to form fit that perfectly reflects the shape of your foot and lower leg, the World Cup Sidewinders are here for you. Heightened sensitivity that comes with the leather interior matched with the stable drive of the sidewinder design make for the best power transfer possible. Designed for: Carving Feel: Race inspired Liner Volume: Mid Features:  Laces and power strap: Designed to keep your heel and midfoot in place, the lacing system and power strap align your foot within the liner Merino wool and Thinsulate: ZipFit toe boxes are insulated with Thinsulate and real merino wool, keeping your toes warmer while still promoting breathability Leather lining: 1mm of fine leather lines the interior of this ZipFit, offering a precision fit and unparalleled heel hold Neoprene toe box: A flexible toe box conforms to your forefoot, regardless of the width. With your foot secure in place, this toe box design allows for toe movement, keeping your feet warm Adjustable cork pouches: Three cork pouches in each liner (located behind the top of the tongue and on either side of the instep) allow you to adjust the cork fill to dial in your perfect fit Sidewinder: Rigid plastic extends to the base of the inside edge of the boot. This stiffened medial side address ankle collapse and offers superior turn initiation Colour: Red/Blue World Cup Sidewinder Leather Inner Boot Liners - Red/Blue