Product description: - Simplest and quickest extensions to apply - High quality hair for an amazing price - No clips,no glue,no damage! - Instant fullness & length - Large color selection - Can straighten, c -Material:100% synthetic Japan high temperature fiber -Length:about 14" 16" 18" without stretching 18'' : about 120-130g 16'' : about 110-120g 14'' : about 100-110g Design with hair on a wire,offers an innovative hair extension that adds length and volume to your own hair in less than one minute!! There are Multi-color For choosing, which are guaranteed to blend with your own natural or color treated hair color. Our colors are multi-faceted and will work with various shades, ash, golden or beige. Go a shade darker for a highlighted effect or a shade lighter for an ombre look. Either way, you can't go wrong! How to measure the size correctly: Take the product out of the package and let it sag naturally as shown asbelow picture , and then to measure. Remark: Since the roll is manually rolled, there will be an error of 2-3cm.