Our Triple Stretch Helm Anklets are constructed using a combination of the Helm weave and the Japanese 12-2 weave. They are made with anodized aluminum rings and EDPM rubber rings. The aluminum rings contain no nickel or lead and the EDPM rings contain no latex, they 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. 9" is the standard length for these pieces but if you need a different length just let us know.