This headband is one size fits most and the size cannot be adjusted. The bow measures approximately 4.5" across. All edges of this style are raw. This style is secured with adhesive once tied and is not meant to be untied. The VELVET FAB headband material is a soft nylon/spandex blend, produced to our specifications, in the USA . Velvet fabric is sourced in China. Each headband is hand sewn and tied by women in our local community. Due to the nature of small-batch production color and sizing can vary slightly