About Madshus Race Rps Ski Boot: Our next lineup is the Race lineup that we’ve done for a number of years. This is the men’s Race RPS. This is a skate boot. RP stands for Race Performance. S is the Skate. This is the men’s version of this boot. So second tier, full on skate boot. Rather than the carbon we saw in the Nanos and the Athenas, we go to PBex nylon plastic.