Superior Service: Due to the different screen settings on various devices, you may see a difference in the shade of your hairpiece from the picture. We provide color consulting and recommendation services, if you are hesitate about color choosing, please contact us with some photos of your hair taken in natural light, we will recommend the suitable color for you. Specification: The wire extension comes with 2 built-in clips that lock the extension onto your hair securely with no slipping. Each pack includes 1 clip and 1 invisible transparent nylon wire for replacement. Advantage: No tape, no glue, no damage to the scalp and hair, You can restyle hair by yourself. The long wavy hair extension can perfectly blend with your natural hair and look fully natural. Easy to Apply: Simply tighten or loose the wire through 4 adjustable hooks get the most suitable size. The secret hair extension sits comfortably in place with an invisible elastic wire as well as 2 clips along the weft for extra support around the back. Upgrade Extension: The extension is made from new synthetic fiber that is thickness and less tangling. And the upgraded wire is thicker and more elastic, not easy to break and not cause any pressure on the scalp.