The Power Wrap is the stiffest liner in our collection. High-density foam construction and additional reinforcement around the cuff and ankles providing maximum stiffness and heel hold. Offered in three volumes: Plug (low volume), Power Wrap (medium volume) and Power Wrap + (high volume). All models have a medium/low volume sole and can easily accommodate a footbed if desired. These customizable liners will stiffen up any boot and are suitable for a variety of ski applications.