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.