This truly stunning 100% silky straight human hair is pre bonded with keratin for easy removal. Each strand of extension is bonded with the highest quality Keratin. Keratin is the safest natural bonding agent available. It can be removed from your hair so easily without causing any damage to your natural hair using keratin bond remover. *Materials: 100% Human hair and Highest Quality Keratin *Grade: A *Weight: 0.6g*25 for 18 inches; 0.65*25 for 22 inches; *Full Length: Actual length is 2 inches longer. For example: full length is 20 inches for the 18 inches hair product *Colour: #2 Darkest BrownStick Hair can be applied by using Shrink Tubes and Micro Rings and Nail Hair can be used with most heat connectors, both products are 100% human hair which can be treated exactly the same as your own hair.