As the heat is here to stay at least through the weekend, I wanted to make sure everyone was aware that: Wearing a base layer can keep you cooler! Counter intuitive, I know, but it's true. A good technical base layer of merino wool or other high performance fabric (not cotton) helps pull the sweat off your skin, keeping you cooler, dryer and overall more comfortable

How it applies in physical activities

And how it can keep you warm and cool when riding