Material & Craftsmanship : Our Headrest Collars are made of High quality aluminumSize : Outside Diameter 0.82inch , Inside Diameter 0.55inch, Height 0.89inch. please ensure its the right size for your car before you order.Universal & Easy installation : No Modification needed Improve your vehicle's interior styling, give your car a unique LUXURY lookPefect Gift & Package includes : 4 Pack High Quality Colorful collar that you can send it to your friends as a gift .perfect for enhancing in car decoration & Atmosphere.Practical tool: these collar ring also can be applied to prevent the headrest from scratches,More Exciting for Your Journey!colour: multicolorMaterial: aluminumPackage Contents:4 x Headrest collarOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.