5 mm braided rope made of natural and synthetic fibres. Stainless steel charm, rings and clasp; nickel-free. Handmade in Hamburg, Germany. To determine your personal size, please wrap a simple piece of string around your wrist and then measure this in cm—the length is the size. If you want to wear your bracelet more loosely, simply choose the larger size. XS = 6.2" S = 6.6", M = 7.2", L = 7.6" cm, XL = 8" cm, XXL = 8.4".