Size: please choose size according to your feet length.If your feet are a little fat and wide, please choose larger size. If you can't make sure the size , please free to contact us. Attention: 1. The width of the shoes are normal. Maybe the shoes are not fit for too slim or too fat foot. 2. There are about 0.01cm--0.2cm average errors on the size chart. 3.Please measure the length of the foot as shown in the picture: