There is no better headband trio than a Classic Knot, Twist and Sailor Knot! The best gift for any babe just developing her style! Each headband is one size fits most and the size cannot be adjusted. The Knot headband is sewn at a 6" diameter (12" circumference) and the Sailor Knot and Twist headbands are sewn at 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 she grows into childhood. The exposed stitching detail and a raw edge is signature Baby Bling! The Knot headband is sewn in two pieces and can be taken apart for hand washing or to mix-and-match. The headbands made in solid colors are 100% nylon and the styles made with a woven patterned material are a nylon/polyester/spandex blend, produced to our specifications, in the USA. 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.