Butterfly is undoubtedly the most stretchy shirt in the world, made not for business but to wear for surfing.

If you are a surfing lover, we assume you have seen a stylish surfer in a video wearing a buttoned shirt. However, there was a problem with wearing a non-stretch cotton or linen shirt when surfing. As the cloth sticks to your arms and chest, it not only feels uncomfortable, but even bothers the movements of paddling and riding. Butterfly, as the photo of the man is doing a layback on a longboard proves, gives solution to this problem.