I asked this in a much earlier thread and Cathe said that they are all wearing various Ryka's. They are wearing the transition during the weight, but not cardio. During cardio, some are wearing the synergy and the transpire. I already have the synergy, not good for high impact (imo). I also have the tranpire low which I love for both high and low impact. plus got a pair of assist xt2 low which I also like for hight and low impact.