This virtually undetectable 20" hair extension makes it easy for you to enjoy great root lift on the crown of your head without putting hair through the backcombing process. The hair extension has a half circle base with five moldable wires and four pressure sensitive clips to create lift and volume simply by pushing hair up to the height you require and locking the clip to maintain height. Lightweight and easy to attach, these virtually undetectable extentions can be put in and taken out in a matter of minutes. Made from Hersheson fiber this piece can withstand heat up to 180Âo/350F and any style stays locked in place until heat styled again.