SK8 Two-ball™ & SK8 Foam-Roller™ Set. Figure skaters need to use before and after training mainly to release leg, foot and back muscles every day to maintain the elasticity of your body. PyeongChang Olympic Pair Gold Medalist Aljona Savchenko uses this set to release her myofasia before her daily warm-up at rink side. This is the set skaters need to have after landing single axel or several double jumps.