Since the inside is a mesh, breathability is good, even if it fits the arm it does not sticky. However, when you wear it to put out your thumbs, the back of the hand is tightened and you feel a little cramped.
Monotaro is attractive product for the field, but I bought this arm for golf. There is mesh in the inside and I like it much more conveniently than the arm which sells for golf as it covers the back of the hand when putting out my thumb.
The feeling of coolness is better than at the time of short sleeve which does not attach anything. It is really comfortable if you move the wind like a bicycle. Buy black and white. I am useful because it is quick thirst.