Arc ST Splitboard Bindings Our industry-leading splitboard binding excels in the trees and powder, but is tough enough to handle more complex all-mountain conditions. 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 our industry-leading Tesla T1 technology. Our Smooth Touring (ST) Tech is featured on our 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. In the Box: Splitboard bindings, ST Brackets, T1 Heel Rests, mounting screws, and Spark Pocket Tool. What else do I need? A set of Spark Flat Pucks or Spark Canted Pucks. Weight: 1.38lbs/ea (628g) - 2.77lbs/pr (1256g) - Medium Sizing and Setup Our unisex sizing means no men&';s or women&';s specific bindings, just splitboard bindings for splitboarders. *** ST Bindings are only compatible with ST Whammy Bars. Likewise, 21/22 and older T1 Bindings are not compatible with ST Whammy Bars and require a standard Whammy Bar. *** ST Bindings are compatible with older Tesla Brackets with brass bushings. Likewise, 21/22 and older T1 Bindings are compatible with ST Brackets.