Ronhill Tech Merino 1/2 Zip Tee (M)

This tee features Tech Merino – our premium 50/50 merino and polyester blend that offers numerous benefits. Runners go through many highs and lows during a long run and one of them will be your body temperature. Merino has a unique quality, which will help lower your temperature when you start to overheat and warm you up when your temperature is low.