Why Choose Vivien Clip in Hair Extensions Real Human Hair? Vivien hair extension is real human hair, double weft is used instead of single weft. Double weft - more hair than typical extensions and don't fall out easily, shedding free. Additionally, the hair clips were covered with lace to carefully protect your scalp from damaging. Extra lace around the clips makes it more comfortable to wear. And the Pre-styled curly could save your time to curl it. Vivien Clip in Real Hair Extensions could help you to change your look and add thickness in a few minutes. And you could do it by yourself and with nobody's help! Specification Hair Type: Clip in Hair Extensions Human Hair Hair Length: 14"-24" Texture: Straight Hair Weight: 14"- 20" are 120 gram/pack, 22"- 24" are 140 gram/pack, Hair Life: 2-3 months even longer depending on good use and caring. Quantity: 1-2 packs for adding volume, 2-3 packs for adding length. Read Before Order Color are taken based on actual products, it may be slight differences due to different light and monitor. The hair is processed, it can be dyed to darker color only. Always keep in mind, never sleep with a wet hair. Before sleep, make sure your hair is dry and tie your hair back. It is always best to make a loose braid or ponytail when sleep. Using your fingers to comb wavy or curly hair often is not recommended, if necessary, please use a wide-tooth comb. Use gentle shampoo, conditioner and cold or warm water to wash hair. Use the low heat when drying hair.