The flex is a flexible pad which provides bending resistance. It helps you control the skis and gives you a more natural kick-and-return cycle. The binding comes with an all-round flex. The release button on the side allows you to switch between flexs for more or less bending resistance. Change to Xplore Free Pivot Plate for maximum range of motion
and a more comfortable walking-feeling in steeper terrain, and when pulling a pulk. Sold in pairs.