Liquid Force 4D Flex Wakeboard Boot 2017 - 9-10. Liquid Force is the first to admit that they were really creative in the design of this binding but not as much in the naming of it. When the binding gives the rider the ultimate in high performance flexibility, why not call it the FLEX?During the testing phases of this model, Shane Bonifay and some of the other team riders that wanted a softer flex in a high end boot were blown away by how maneuverable, yet secure this binding made them feel on the board. Combining a welded vented upper construction with a 3-in-1 closure system makes this binding one of Liquid Force's lightest, as well as one of their most adjustable. The point of the 4D Chassis System is to make the ride more responsive due to the fact that the board and binding can flex together. The FLEX 4D binding provides that type of feel and performance perhaps more than any of Liquid Force's others! 4D Chassis System 45 Degree Angle Attachment Points Adjustable Length Upper Velcro Strap Dual Laces Slim Fit Honeycomb FlexFloor Welded Upper With Quarter Panel Venting 3-in-1 Closure Design Reflex Liner. The item "Liquid Force 4D Flex Wakeboard Boot 2017 9-10" is in sale since Thursday, April 19, 2018. This item is in the category "Sporting Goods\Water Sports\Wakeboarding & Waterskiing\Bindings\Wakeboard Bindings". The seller is "sunsports12" and is located in Naples, Maine. This item can be shipped worldwide.