The U-part wig can be adjusted the opening of "U" shape according to your head size. When getting the wig, don't rush to install it right away. You can put it on your head first to compare, to decide you will wear it at middle part or side part. According to the size of your head (Make sure the wig fits the back of your head), determine the opening size of "U", which means how much hair you need to leave out. After that, you can start the regular installation steps.