RECOOL Wire Hair Extensions Product Details: Hair Material: brazilian remy human hair. Texture: Natural straight. Length & Weight: 12"-65g, 14"-70g, 16"-80g, 18"-90g, 20"-100g. 1. Natural human hair products, soft and smooth. 2. No tape, no glue, it wouldn’t damage your own hair. 3. Get thicker and longer hair in a few seconds. 4. You can change the hair style, like straighten it or curl it. 5. Longer usage time, with good hair care. Q & A 1. Are they human hair or synthetic hair? How to tell different? They are human hair, no mix the synthetic hair or animal hair. And it’s easy to see difference. Pick a single piece of hair and tell them by burning and smell. (Attention: Be careful with fire)For human hair, it’s natural protein, it will be ash. While for synthetic hair, it will be a sticky ball and smells terrible. 2. Can I dye the hair? Yes you can. As a general rule, it’s easier to darken the hair than to lighten the hair. We recommend to dye darker color, since it’s difficult for the original color to fade. 3. Why the colors of the hair extensions I received don’t seem exactly like the picture on screen? Actual hair color may vary slightly from colors shown due to lighting, screen resolution, and setting. Thanks for your understanding. 4. How to care for the wire hair extensions? Take it off when you sleep. Make a hair care before heat styling. Don’t comb or brush the hair extensions when the hair is wet. Don’t suggest wear the hair extensions when you go swimming.