It's hard to say which kinds of face shape are suitable, for there are many types of butterfly sunglasses. And also the color of the sunglasses is also important. People should choose the right frame which can match your face shape. Generally speaking, if you have the round face, you may have to wear the round frames. And if you have long face, maybe you should choose the long frames which can match your face well. Besides, you should know that they were one of the brands which are to actually design eyewear that is protecting the eyes from the sun while still looking good. They have perfect the materials used in the frames. Anyway, just go and choose them to have a try. I think you can pick one that fit you.