I use the vest while biking and am very satisfied. The problem in cycling is that you can even in colder temperatures uphill and downhill sweat freezes due to the air stream. I tried with a variety of bike jackets to solve the problem, but the best effect was clearly the Odlo Singlet. Although I sweat uphill still, but the shirt absorbs the sweat on super, so it is not cold feels when going downhill on the skin. Therefore, a strong buy recommendation!