Express-Weft Hair Extensions Applied in 20 Minutes | TikTok。Volume Weft or Flip-On One Piece Crown Hair Extensions, made with Brazillian 100% Human Hair 18\" Natural Wave, Piano Highlights #1B Natural Black and #613 Natural Blonde. It can be dyed or bleached, 130 grams. \"This piece is for someone who needs some volume with the same length or some density with just a little bit of length or both.\" With proper care, this piece could last for up to  3 years. or longer. With 3 clips, adjustable hooks, and an invisible wire for a better fit. This piece measures 13.5\" wide, so it could be for head circumference size 22\".