The backing cards are 10.8cm x 8cm Each charm is threaded and tied onto high quality waxed cotton cord. Each bracelet is approximately 30cm in length. They are supplied untied, they can then be attached to any wrist by knotting the threads, the excess cord can then be snipped off. They are suitable for children (over 4 years old) and adults. They are presented on a beautifully designed backing card, we only use high quality 300gsm for all of our backing cards. They will have a random cord colour, unless colour is requested.