This anklet is constructed using the box weave and anodized aluminum. If you choose the stretch option then EDPM rubber will also be used to give that stretch to the piece. The aluminum contains no nickel, lead or zinc and the rubber has no latex making our pieces hypoallergenic. The standard length of the anklets is 10" but if you need a different length just leave me a note and we can work with you. If you choose the secondary color option please leave me a note in the special instructions to seller section telling me what other colors you would like me to include.