Basic product information and features【Size】：22Inch【Package】:Each box has13 rows of the 6D hair, each row has 5 strands of the 6D hair, each strand of the 6D hair is 0.8 grams.A box of 52 grams in total，the whole head needs 35-40 rows of 6D hair connections.【Quality】：6d hair extensions is 100% human hair, can be bleached for 10 degrees（we do not suggest dying the pre-colored hair which has been previously treated by a chemical method，Double processing of color will lead to shedding and dryness of the hair. Hair shade should be selected close to the desired color in order to avoid overprocessing）.【Quick】：20 minutes to complete hair extension, 20 minutes to complete removal of hair, saving time and replacing traditional hand-receiving.【Comfort】:Comb easily ,handle simply and clean convenienty.【Healthy】：Food grade material,healthy and anti allergy.【Simple】：lt's easy to training, practice and operation so that it can reduce labor costs.【Environmental】：The hair extension process don't need energy,without glue, avoid glue damage to hair and the hair can be reused ，just simple manual operation.【Professional Effect】：6D hair extensions can last up to 3 months with proper care, and can be washed, straightened, curled and styled with your regular hair.【Service Guarantee】：We offer 100% risk-free satisfaction guarantee. If you have questions after your purchase, please don't hesitate to contact us. We will help you out within 24 hours.