This headband is one size fits most and the size cannot be adjusted. The headband is sewn at a 6.5" diameter (13" circumference), keep in mind that measurement is before it stretches. Baby Bling feels this is the perfect size for their soft nylon to fit a newborn and stretch comfortably as she grows through childhood. The bow measures approximately 4" across. The exposed stitching detail and a raw edge is signature Baby Bling! A fun feature of the prints is their logo printed to complement each design. This style is sewn in two pieces and can be taken apart for hand washing or to mix-and-match. The printed material is a soft nylon/spandex blend produced in China. Each headband is hand sewn and tied by women in Baby Bling's local community. Due to the nature of small-batch production color and sizing can vary slightly.