Tressecret remy human hair clip-in seven piece extension is made of 100% collected remy human hair. It enhances volume and thickness to your hair and is curl-safe with thermal styling tools. Other brand's hair extensions would require a head to have at least 12 inch of hair to cover, while seven piece extension can fully cover a head with only 4 inch of hair. The unique 'U'-shaped weft, secured by advanced silcon-based clips, is made of aerosilver lace, which fits comfortably, while repelling against harmful and odor-causing germs.