Get wrapped up. Crafted from a continuous line of 18k gold vermeil - inspired by the captivating movement of light. Finished with a hinge for easy on and off. Small: Circumference 15.9cm, opening width 4.5-6cm, inner diameter 5.6cm Medium: Circumference 17cm, opening width 5.5-7cm, inner diameter 6cm Large:Circumference 18cm, opening width 6-8cm, inner diameter 6.5cm