The Fill In by Ellen Wille is the perfect top piece to add length and "fill in" . The Fill In consists of 9.1" long hair and has a wefted monofilament base that measures 5.25" x 3.25". There are four pressure sensitive clips to ensure a comfortable, secure fit. The Fill In is made up of the finest 100% remy human hair that allows for versatility when styling. The Fill In is part of the Ellen Wille Top Piece Collection.