Product Feature Material : 9A grade virgin human hair. Color:Natural Color(1b to 2)Texture:yaki straight Weight: About 120 grams/4.23 oz Length: 8-22 inch Construction: Double weft Human hair Type: Clip ins Specification:7 pieces,16 clips 1*8" weft with 4 clips 2*6" weft with 2 clips 2*4" weft with 2 clips 2*1.5" weft with 1 clips 7 pieces combination is flexible to use by your choice. Useful for both thin and thick hair by adjusting the pieces.Clips are already attached and the set is ready for instant use in just 5 minutes without the hassle of glues,tapes or weaves. Q:How many sets do I need?A: 1set is natural,2 set for full head. Q :Can they be straightened,curled? A: Yes,you can use hair straighter or hair curler to style the virgin hair. But don't do it too frequently, or the hair will easy to get dry and tangle. Q: How long does it last? A: Treat it like your own hair and take very good care of it, the hair will last more than 6 months. Good hair materials make the hair products more strong and last long. Q:Why are my hair extensions getting tangle? A:Hair get tangle because it is too dry, wash it with conditioner it will go better. try to use some olive oil, it is much better. Q:Return/Refund Policy? A:If you are not satisfied with the hair, you can returen the hair back for full refund. Hair Care 1)Wash and Condition Hair Regularly. 2)Hackle Hair Gently before Washing.Do not Rub or Twist Hair.3)Add Mild Shampoo to Cool Water and Wash Hair till Clean. 4)Blot out Excess Water with Towel and Allow Hair to Dry Naturally. 5)Crush Straight Hair in a Downward Motion Straight with the Ends.Work your Way up to the Roots. 6)Hair May Tangled if General Care Directions are not Followe