The Sync binding is Connelly's most technically advanced boot to date. This binding features Free Flex technology that has eradicated the restrictions traditional base plates put on a ski. Each Sync boot is set in a supportive, yet flexible Exolast and is mounted with Connelly's dual plate design. In the middle of a turn, the exo-frame flexes with the ski ever so slightly, unnoticeable in your boot but very noticeable in the performance of your ski. The seamless outer shell and removable liner feature a dual lace system that pulls your foot back into the ergonomically shaped heel pocket. There has never been a better connection between you and your ski. Sizes: S(6-7), M(8-9), L(10-11), XL(12-13).