【Real Clip in Hair Extensions Human Hair】10 Inch to 20 Inch, for 50g each pack. The longer the length is, the thinner the thickness will be. 100g is recommended to add hair length for thin hair and 200g will make a full head.【About the color】The clip in hair extensions are made of real human hair and come in a variety of colors, lengths, and textures to blend seamlessly with your natural hair. May very slightly from colors shown due to lighting, monitors, and setting. You can choose the hair according the display picture, considering with your own root hair color.【3pcs VS 7pcs】 3pcs hair extensions are all 50 grams each pack(3pcs include 2 wefts with 4 clips each and 1 weft with 3 clips). 7pcs hair extensions is 80g-120g per pack(7pcs include 1 weft with 4 clips; 2 wefts with 3 clips; 2 wefts with 2 clips and 2 wefts with 1 clip).The three pieces are suitable for those who have a certain amount of hair volume and want to increase length. Seven pieces are suitable for people with less hair to increase the thickness.【Easy and quick application】Clip in human hair extensions are very easy to apply, and they can be done by anyone without the need for a professional hairstylist. They can be applied in just a few minutes, making them a convenient option for those who want to add length or volume to their hair quickly.【No damage to natural hair】Clip on real hair extensions do not require any heat or chemicals to apply, which means they are less likely to cause damage to your natural hair. They also do not require any permanent attachment, so you can remove them easily without causing any damage to your hair.