Sizing Guide
The general guideline is that if your hair is smaller than the size of a golf ball when you hold it together, then the size for you would be the PONY-O Classic for a full Pony or the PONY 2.O for sections of hair.
If your hair is the size of, or larger than the size of a golf ball when you hold it together, we then suggest the PONY-O XL for all your hair together and the XLS for sections of hair.