Making your own pompoms can be a fun way to decorate hats, scarves and other crafts, though why not make it super easy as well with these handy pompom-making rings by Addi! The Addi Moon Pompom ring set consists of four different rings with a diameter of 3.5cm, 5.5cm, 7cm and 9cm. Suitable for use with all yarns, ribbons and fabrics.