Liner Volume








Best for




World Cup Sidewinder

5.00 out of 5 based on 6 customer ratings
(6 customer reviews )


Unique Features:

  • Leather and neoprene interior provide form fit and comfort
  • Sidewinder – stiffened honeycomb plastic extends full height of medial side

Best for:

  • Performance oriented skiers searching for the perfect turn
  • Mid volume performance liner that works great for narrow to mid width shells

Skier type

The World Cup sidewinders 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.


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.


The World Cup Sidewinder liner is pre-packed with a moderate volume of OMFit self-molding cork composite, specifically designed for normal volume feet in low to mid volume shells. For ski instructors and active racers focusing on every element of the turn, the World Cup Sidewinder ski boot liners will give you a new edge, holding your foot and lower leg in the optimal position for maximal drive and control. 

Jimi Ryan

6 reviews for World Cup Sidewinder

5.00 out of 5 stars

  1. Reviewer profile image
    5 out of 5

    Kenneth Goetz

    Great liner

    I had already owned an earlier Zipfit and loved it. It solved many boot fit issues and improved my skiing immeasurably. The World Cup, as recommended by Zipfit has been in another league entirely. The fit, of course, is excellent, but it's also taken the boot performance to another level. The Zipfit is so precise, that I sometimes think the boot shell is really just there to attach the liner to the skis. My last Zipfit lasted more than 500 days and was still going strong, but I'm delighted that I upgraded.

    1 of 1 found this helpful
  2. Reviewer profile image
    5 out of 5

    Bob Aubrecht

    Outstanding Liner

    I would add your review scale with a 7-8 at the upper end and rate the Sidewinder as an 8+. The contact between the foot and ankle and the boot is moe solid and consistent than I had experienced in the two Gara liners I had used in the past. The experience of high speed carved arcs in the Sidewinder on a FIS slalom ski is about as much fun as I have had in a very long time. The Sidewinder is the perfect liner for advanced skiers and ex-racers.

  3. Reviewer profile image
    5 out of 5


    Love my World Cup Zips!

    I’ve been trying to find the right liner and boot combination for years. I’ve skied stock, foam liners and now Zipfit and they are hands-down the best thing I’ve tried yet. If you want that locked in feel without sacrificing comfort this is the way to go. Yes they are expensive, but you will never buy another liner and they will outlast your shells. When it was time for new boots I simply moved the liners over to the new shells.

Add a review

Your email address will not be published.