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. We feel this is the perfect size for our soft nylon to fit a newborn and stretch comfortably as they grow into 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 our 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. Due to the nature of small-batch production color and sizing can vary slightly.