Our number one seller on the website and in top retail stores! The Classic Knot appeals to everyone because of its simplicity. It is easy to dress up, or keep casual. It can survive the bottom of a diaper bag like not many other pretty things can. Available in a wide variety of colors, you can never have too many! This headband is one size fits most and the size cannot be adjusted. The headband is sewn at a 6" diameter (12" 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 through childhood. The bow measures approximately 4" across.