Cutout baseplate design, medium flex Asym Rip N Flip Highbacks, and a smaller ankle strap with a flex window combine to save valuable grams and deliver a surfy ride down. All Arc ST Bindings incorporate Spark R&Ds industry-leading Tesla T1 technology. The Smooth Touring (ST) Tech is featured on ST Brackets and ST Whammy Bars. These components utilize a proprietary thermoplastic blend that is molded over the metal part reducing friction, increasing durability, and improving touring efficiency.