Whether we're racing laps at the track or charging up the trail, we're wearing these performance merino wool socks comfortably under our running shoes. Merino wool is a cozy classic, and it provides us with premium comfort in warm weather too. It's packed with temperature-regulating, moisture-wicking, and odor-fighting properties. The light cushion and flexible design are ideal for running, providing us with all-day rebound and arch support.