1. Weight and Specifications Invisible Wire Hair Extensions At 120g 20 inches, each pack includes 1 piece 9 inches wide with 4 clips in wefts; 2 wires in different lengths for replacement; adjustable hooks ensure a perfect fit. The upgraded wire is thicker and more elastic, not easy to break, and does not cause any pressure on the scalp. 2. Versatile Wearing Options 1. Position the wire hair extensions on your head like a headband, secure them with 4 bobby pins, and hide the wires with your own hair. 2. Only use invisible wires, suitable for easy hair loss and sensitive to bobby pins customers. 3. Only use 4 hair clips, suitable for customers with soft and sparse hair on the top of the head. 3. Multiple Color ChoicesOur wire hair extensions are made of synthetic hair. Hair extensions cannot be recolored, nor can the shape of the extension be changed with hot tools. However, we've selected the latest fashion styles and popular bloggerapproved colors for you to choose from. You can either match your hair color or create a unique look by mixing different colors. 4. Maintenance Carding Invisible Wire Hair Extensions are sewn by hand and need gentle combing. To reduce tangling, use a spray bottle with a mixture of conditioner and water. If you don't have a conditioner, use water., then detangle using a widetoothed comb. 5. Brand and GiftsOur product comes with several gifts to help you install hair extensions quickly: a folding comb, a replaceable invisible wire, rubber bands, and wire clips.