The RDX features quad molded-in fins which are deep enough for extra hold when needed, but still allow for a loose, fun ride. The aggressive 3 stage rocker gives you the pop you are looking for while the single to double concave center softens the landings when you really send it. The M6 inserts are designed to partner with the new 6X binding or any 6” binding. Experience this board and see why Raph gives it his stamp of approval.