This is such an awesome piece. Living in Utah often means being stuck inside on the trainer when the snow is flying outside. Airflow is often an issue riding inside on the trainer even with fans I find myself overheating and pouring sweat. I started using both the tank and short sleeve version of this FR-C Pro base layer and I can attest to the sweat wicking abilities/cooling effect they provide. I will be buying more to add to my arsenal for sure. One cool thing, especially for riders on teams is that these can actually be customer ordered/sublimated with team logos. I don't give out 5 star reviews often, but these are legit and awesome base layers.