Ventilator tri shorts
The Ventilator Tri-Shorts are designed for targeted muscle support during warm weather triathlon training and competition. The CW-X Support Web™ provides targeted support to the areas most taxed by a triathlete – the core, hip flexors and back – while Mesh ventilation panels allow hot air to escape and cool air to enter, reducing heat fatigue. Targeted compression allows for improved circulation and accelerated recovery.
These shorts will prevent the jiggling of the muscles... which you do not want.