Backcountry skiers who relish a solid ankle and heel fit have been asking for this liner for years, and Zipfit finally delivers. The ZipFit Espresso Liners feature a lighter construction than their regular liners, using a combination of Ultralon and Flexalon foams but having the option to add OmFit cork selectively to improve fit. Weighing in at ~320 grams in a 26.5 (the GFT is just under 600 grams) means you can have your fit and skin with it, too.