Material: High Quality Stainless Steel. it is lead free and nickel free.Stainless Steel is hypo allergenic, it doesn¡¯t rust, change color or tarnish. Measurements: Inner Diameter: 2.4 inches (60mm); Width:0.27 inches(7mm); Opening: 1.4 inches(35mm). TIPS:manual measuring permissible error. 8 Colors: Silver, Gold, Rose Gold. A classy way to wear our most-useful hair accessory! Simply place the bracelet on your wrist and wrap your hair tie around the groove. When you need the hair band, it is easily removed and a simple, elegant bracelet remains. No more large creases on your wrists from elastic bands High-quality Ion Plating: using excellent electroplate technique that guarantees life-time color retention.Hypoallergenic: 100% safe to wear as it is lead free and nickel free; never worry about turning your wrist green. Looking for a unique birthday, anniversary, bridesmaid, or just because gift? This bracelet is sure to impress! They will come beautifully packaged, and ready for gift giving.