Weight Design: 12inch 30cm 100G 16inch 40cm 100G 18inch 45cm 120G 20inch 50cm 120G 22inch 55cm 120G 24inch 60cm 120G Weight statement: Above is the product total weight, including hair and clips. Clips weight are about 23.5g. Totally Weight Error Range is +/-5g.Please know this before placing order. Can This Hair Be Straightened, Curled? Yes, the hair is real human hair so it can be straightened or curled, but please don't do it too frequently if you want hair with a longer lifetime. If you restyle it each day, the lifetime may be 4-8 weeks and hair ends will be very dry. Why Is The Lifespan Only 3 Months In The Description? According to the frequency of people's hair growth, ladies usually go to the barbershop to fix their hair once every 3 months. 1. The hair material is naturally black, so for getting different hair colors, the factory painted the hair. So, the hair is damaged once already and we called "Machine Remy hair" or "Nonremy hair" in the description. 2. If the buyer doesn't always heat hair, just let hair keep the original state and always add nutrition on hair, the hair can be used for 5 months (according to the experience of our real clients). 3. If the buyer always restyle hair, and changes color, also don't notice the hair care, the hair will only be used 4-8 weeks. How To Do HAIR CARE Each Day? 1. Wash the hair 1-2 times each week. 2. Warm Water washing, use a mild or Weak acid shampoo. Warmly Reminder Wash with shampoo afterward before using shampoo: Every time you wash, please wet your hair with warm water, and then apply conditioner evenly on the hair. This step is called Co-wash, which allows the hair to be activated and is not easy to knot and smoother. What CAN and CAN'T I do on the hair? **********What you can do********** 1. use the olive oil or hair conditioner twice or three times each week. 2. Brush hair 2-4 times each day. 3. Making loose braids or ponytails before sleeping. 4. Apply heat protection product to the hair before heating hair with flat iron or roller. **********What you cannot do********** 1. Can't wash hair within 2 days after application. 2. Cannot sleep with wet hair. 3. Can't brush it when hair is wet. 4. Cannot bleach it again. 5. Can't swim without a professional swim cap. 6. Can not use shampoos and conditioner which contains alcohol. 7. Can not blow the root of hairs too near with the hair drier. 8. Don't grasp the root of hair overexert when washing. Standard Shipping As usual, it needs 15-60 days. If your city is in a remote area, maybe it needs more days. After the package arrives in your country, standard shipping will give the packages to your local post office. So the estimated delivery time depends on the efficiency of your local post office, please be patient to wait or just call the postman for earlier delivery. Fast Shipping Choice Available We can also offer Fast shipping as another shipping choice, 4-7 Working Days Except for Holidays with a shipping fee. Even the shipping cost needs to be paid, but your package is safer and the estimated delivery time is exact. Please Eusure Your Address Is Safe and Valid In order to ensure that your package can arrive safely, please make sure that there is no problem with your address before placing an order. The P.0.Box address is very easy to lose the package. If you put the address in the P.O.BOX, the package shows that it is signed, lost or stolen, then will not give you a refund for the dispute. Please do not uninstall the app before receiving the goods, and check the latest status of the package in time to contact the post office or courier company in time. Is This Human Hair? it's 100% human hair. Exactly to say, it's not "natural hair". That's because all the light colors are bleached colors basis on the natural black color hair. And the hair material is coming from Asian people's hair donors. So it's also the reason why this hair cannot be bleached again. How to Identify Human Hair and Synthetic Hair? --Firstly, get ready for a lighter and a little strand of hair ( At least 10 hairs）. --Then, burning the end of the hair for 3 Seconds. How to Identify Human Hair and Synthetic Hair? --Firstly, get ready for a lighter and a little strand of hair ( At least 10 hairs）. --Then, burning the end of the hair for 3 Seconds. ********Human Hair******** ---Burns very quickly, and it smells like a burst fragranced. ---When the lighter is moved away, the fire will be extinguished immediately. ---After burning, it is easy to turn to be ashes. ********Synthetic Hair******** ---Smells like burning plastic, very pungent, and there is black smoke when it is burning. ---When the lighter is moved away, the hair will continue to burn for several seconds.