Our Wire Hair Extensions Advantage:1. Instant Length and Volume: Only 5 minutes to put or take out. Wire hair extensions are the easiest and quickest way of adding volume and length ever. Don’t need to worry if you are new to hair extensions.2. Super Convenient: Just put the hair extensions on your head, and pull your hair over the miracle wire to cover the hair extensions. Comb the hair to make it blend with your hair. Then you are ready for a date.3. More Natural & healthy: no tape, no glue, better hair protection. 100% remy human hair extensions can be dyed, curled or straightened.4. More invisible: with transparent wire, can blend perfectly with your hair color.5. Adjustable Size: by adjusting the position of the hook and then you can tighten or loosen the standby wire whose length is 9.25 inch. We put 3 more wires in the package. It’s not suitable for people with very fine hair on the top or baldness as the wire may be seen.Our Wire Human Hair Extensions Specification:Hair Material: Remy human hair can be curled and dyed.Transparent Wire Hair Extensions: one piece per pack.Texture: Straight, and have a natural wave when wet or left to airdry or diffused.Size: Adjustable. Fit the extensions on your head by tightening or loosening the wire.Length: 12inch,14inch 16inch, 18inch, 20inch.Width: 10.9inch.Light Weight: 12": 70g, 14": 75g, 16"-18": 95g, 20": 110g. 1 pack is for adding length, and 2 packs are for adding volume.