Heyyyo! Flux lady here... A lot of our Flux team riders ride the RK's for everything. Zack Wilmott, Spencer Link, Keoni Kaimuloa, Chad Tarbell, Justin Mulford... among others. Flux makes urethane highbacks with a stable spine. When you grab hold of one of these bindings... you can bend it side to side, but you can't bend it front to back. It's not going to taco over when you are doing front to back carving. Although it is the softest binding in the Flux line... it does carry some good support for jumping and landing heavy. Let me know if you have any other pregunas, senors.