Race Boots! If you need them, we have them. The 2020 Fischer RC4 RD Podium series of boots are offered in 110, 130 and 150 flex. The RC4 Podium is the same boot that World Cup athletes have been using for the last several years. It has a straighter stance, a 92mm race plug last, and does not use Fischer vacuum technology. By dispensing with vacuum technology, Fischer was able to create a boot with plastic that will perform better in cold weather and have greater durability. This is a true race plug boot with lace up liner available in three different flexes for U16 level to World Cup athletes.