This is a scrunchie made using Liberty Tana Lawn fabric. It comes as a set of 2. The inner diameter is approximately 5cm and the outer diameter is 11cm. It's large enough to fit loosely around an adult's wrist. Suitable for children and adults. Japanese-made elastic is used, so it's durable and should last a long time. However, there is a 1cm opening in the seam to allow for elastic replacement.