This headband is one size fits most and the size cannot be adjusted. The headband is approximately 6" in circumference, keep in mind that measurement is before it stretches. We feel this is the perfect size for our soft nylon to fit a newborn and stretch comfortably as she grows into childhood. The bow measures approximately 3.5" across. The edges of the headband are raw and are meant to roll. This style is secured with adhesive once tied and is not meant to be untied. The materials for this style are sourced in China. Each headband is tied and assembled by women in our local community. Due to the nature of small-batch production color and sizing can vary slightly.