Thank you for viewing! This is a knot charm bracelet using two types of chains. It is made to be compatible with metal allergies. It is 40cm + 5cm with an adjuster. ★ Each item is handmade, and some parts are made overseas, so there may be variations between left and right, air bubbles, wrinkles, small scratches, and burrs. ★ Although it is made to be compatible with metal allergies, it does not necessarily mean that allergies will not occur. If you experience an allergic reaction, please discontinue use. We are not responsible for any such reactions.