K2 BFC 120 Ski Boots Kayak Frame: Marine grade galvanized steel

Frame: Marine grade galvanized steel

Sizes: M-L

Oxford Mechanical Stretch

Constructed with nylon and PU upper

They are a silky Nylon/Lycra blend that are thin and comfortable under boots

K2 BFC 120 Ski Boots Kayak Frame: Marine grade galvanized steelK2 BFC 120 Ski Boots Fastfit Instep Softer TPU material is used in the instep area of select models' shells for quick and easy entry and exit. CushFit Pro Maintains the renowned comfort of the original Cushfit liner, but with a notable increase in support and performance thanks to the use of Ultralon foam, similar to what is used in our Powerfit Pro and Precisionfit Pro liners. GripWalk Outsoles Removable and interchangeable