?Flexible & Adjustable?1. Comes with 4 built-in U clips that lock the extension onto your hair securely with no slipping. 2. Simply tighten or loose the wire through the adjustable ring to fit your head. Suitable to all head sizes. Also elastic and comfortable to wear without over tightening. 3. New S Hook will prevent the wire from falling off.d wire is thicker and more elastic, not easy to break and not cause any pressure on the scalp. | ?Easy to Wear?Just 3 steps increase your hair volume quickly.?Separate your hair above your ears, about 1-1.5 inches from your hairline, and leave it on top;?Place the hooks in different positions to adjust the size to your head, then place the extensions with the wire in the back;?Place 4 clips onto the hair for further security, then release the top of the hair?Finally, Use your own hair to hide the wire. | ?Advice on Color Match? To match your color: 1) Let your hair down and snap a phone picture of yourself. Make sure the photo(s) is(are) taken(s) in/under natural light (away from direct sunshine) where you can clearly see it (from root to ends). Use no filters that could change the hue. 2) Contrast the color of your hair with that of the hair extensions on the same screen.3) Shop for your ideal match. In case of any questions or problem, please keep us informed. | ?Service Guarantee?We are eager to provide the best products and service to every customer. Please contact our customer service team if you have any questions or dissatisfaction. We will respond to you in 24 hours. | ?Care Tips?: Unlike your own hair, this hair extension may get tangled without nutrition. You can use detangle spray or get a spray bottle and put some conditioner in it and add water. If there is no conditioner, just spray some water, then use a wide tooth comb to brush it. Start from ends and work towards the root to decrease shedding.