The Lange RS series has a reputation for being one of the hardest charging race boots around, this reputation is carried on with the RS 110 S.C.. This boot is a 110 flex made for a rider looking for a pretty stiff boot. The Dual Core technology in the boot makes it a boot that retains shape and stays comfortable while still remaining stiff. The Dual 3d Liner makes for a comfortable and customizable fit that still transfers power well from the rider through the boot and into the ski.