Dark Brown 2 20 Keratin Tip extensions add length and volume. These extensions deliver a seamless blend with natural hair thanks to their cuticle Remy human hair. Each pack contains 25 pieces, with each piece weighing 1 gram. The flat tips use 100% keratin to ensure a secure and comfortable attachment, lasting for 8-11 weeks before reapplication is needed. Styling versatility is achievable since they can be heat styled.