Note: The 1/8" Skinny Elastic Headband is a one size fit all, but the 5/8"Elastic is mostly recommended for infants. It is very comfortable and light on the head. It stretches to fit almost any head size and it is our most popular elastic style. With the skinny elastic, you can have your hair down and it does not slide off you head. It hides under your hair and stays on for all day wear. Look through our gallery to see all that we have in are collection. We have made wearing headbands cool again including for Adults.