My son is 13 years old (5'5", 113 lbs) and we bought 3 Mediums for him to rotate between. He likes capezio's ballet belt better than the body wrappers ballet belt.
Really well made dance belt! Not so much material that it bunches up and not so little that it isn’t durable. Dancewear Corner also got this to me at a ridiculously fast speed. Won’t ever order from the mainstream company’s again.