I took it to the right size but unlike an X-Bionic Energizer / 20100 it is not used enough. So yes it is tight but the material used for this shirt, do not age well. He tends to do that a few folds and there and relax after a few uses. That remains my view, and it is also true that it is twice cheaper than the X-Bionic .. But I base my evaluation on its effectiveness. Not convinced. Damage