Our Double Stretch Helm Anklets are constructed using a combination of the helm weave with the Japanese 12-2 weave. We use anodized aluminum rings that contain no lead or nickel and EDPM rubber rings which contain no latex so the pieces are hypoallergenic. They can be ordered in a wide variety of colors or you can contact us to do custom colors. Since they stretch they do not require any other findings and so are easy to take on and off. these pieces have a standard length of 9", if you need a different length just let us know.