The most supportive binding in our new 4D lineup is the FORM 4D. Among our test team of riders, this quickly became the binding of choice for Shawn Watson and others preferring extra support in their boot to give them more control and response. The support on this binding comes from the molded quarter panels that add overall rigidity to the design. While this boot is our most supportive, it was designed with Flex Zones in the upper rear to keep forward and backward mobility a part of the overall ride. Support where you need it, along with movement in just the right areas... combine this with the 4D FlexFloor and 45 degree angle attachments and you’ve got a binding designed to give an unparalleled connection between your board and binding!