K2 Spyne 90

Model Year
All-Mountain Traditional
Last Width
Flex Index
Price (MSRP)

The K2 Spyne 90 returns with a new, sedate cosmetic that will appeal to a lot of good skiers looking for a little less flash along with a complete liner redesign that made much of the previous versions flaws vanish, just like that. It also comes with a set of replaceable, grippy toe and heel plates for more cushioned and secure walking.

Testers still say that the Spyne 90 fits more like a medium and stiffer than billed. So for skiers looking for a medium-wide 110 flex at a heck of a price, we'd say this is a perfect option for you! This is probably one of the top three boot values of the test this year--again. The well-balanced K2 boot geometry is at the heart of its success. Tester after tester mentioned standing right where they wanted to on the ski. There wasn't a single mention of a lack of performance or deficit on snow—testers were blown away with how hard it ripped. Testers also vouched that the new liner had more toe room and a more even fit—improvements on last year's rendition.

Now, that doesn't mean it was perfect—there were some fit demerits that knocked it off the top podium perch. The cuff is a touch low, and the shin fit still a little abrupt, according to testers. But keep in mind that the K2 EVA foam-based liner construction responds well to heat molding, so these issues may go away in a hot flash.

Sizes (MP) 
Hike Mode 
Heat Moldable Liner 
Boot width profile 


  • “Great value—110 flex medium.” -- Mark Elling
  • “Overall a good boot—a comfy wide boot that fits like a medium.” -- Charlie Bradley
  • “Made all skiing movements effortlessly—relaxed stance, just right.” -- Marc Stewart
  • “The fit is close for the width group—so foot felt connected to the shell.” -- Bob Gleason
  • “Undervalued—burly and stronger than stated.” --


  • “Plain Jane—reminds me of my dad's boots from ten years ago.” --
  • “Ankle pockets fit pretty flat—not much contour there.” -- Bob Gleason

This boot available at...

Warren, VT
Killington, VT
Westwood, NJ
Ellicottville, NY
Seattle, WA

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