The ultimate ski boot liner.

Amazing fit, warmth and performance.
Designed in Aspen, Colorado
Made in Italy 🇮🇹

“As other liners break down, Zipfit’s break in.

Total comfort and performance without sacrificing either.

Zipfit inner boots are the most functionally sound, highest quality ski boot liner product on the market. Your whole skiing experience will improve on your first day wearing Zipfit inner-boots.

Because it’s what’s inside your boot that matters most. 

They are so much more than just mass produced liners.

Our proprietary fitting system based on Sardinian cork continuously molds around your foot. 

Engineered to Impress

Zipfit Inner Boots are designed for the most extreme and demanding environment of ski boots. They feature a proprietary and uniquely resilient cork formula as the fill. The power strap and easy-pull laces ensure the proper fit you deserve. One pair of Zipfit’s can be used in your alpine boots one day and AT boots the next and will likely outlast your boot shells.

Crafted With Love.

Sven Coomer, one of the most recognized ski boot designers in the world, designs Zipfit Inner Boots in Aspen and manufactures them to the highest standards in Montebelluna, Italy. Sven uses a diversified team of professional and amateur testers around the world to help refine models for each season.

Zipfit: Zero Injection Pressure Fit

Our inner boots feature a non-catalytic, pre-packed “flow” system of proprietary granulated cork in the tongue, ankles and heel, which unlike foam or thermo-moldable based systems Zipfit’s never hardens or packs out. A truly unique feature of the Zipfit system is the ability to add or extract the compound from your Zipfit liners at any time, guaranteeing a proper and adaptable fit for the life of your Zipfit’s. All this providing a level of steering and edge control like you’ve never experienced.


“The SideWinder spoiler molds into the shell and the cork molds around your foot for a live of control that is unparalleled. This unique symmetrical support balances power equally and effortlessly to both inside and outside edges”
Weems Westfeldt
Former Aspen Highlands Ski School Director Author, Brilliant Skiing Every Day
“I’m totally blown away by the performance of the Zipfit inner boot. I have never had such edge control in my life with incredible comfort in my feet. It took just one day for my skiing to fully embrace the control that comes with the Zipfit Sidewinder. Once I tried them there was no going back.”
Hermann Gollner
Freestyle and Aerials Pioneer Olympic Coach and inventor of Breakaway Race gates
“Lower volume, more responsive and it’s warmer. The way the Zipfit SideWinder ties the medial side of the foot with the overall support creates more response and control. There’s nothing like it.”
Johno McBride
Former U.S. Ski Team Speed Coach
“Zipfit is the best aftermarket liner you can buy. Its easy to sell Zipfit to any customer who comes in with a foam boot. We put Zipfit on one foot and leave their foam on the other and they buy Zipfit every time. Foam didn’t work when it was first used in the 1960s, and it still doesn’t work.”
Bob Gleason
Owner Boot Doctors Telluride