Clip in Hair Extensions are Made of Remy Human Hair. Clip in Hair can Add Volume Easily, Suitable for Thin Hair. Usually 1-2 Packs for Thin Hair, 3-4 Packs for Thick Hair. Easy to Apply and Remove. You can Remove it at Night, So It's Not Easy to Tangle. Using Stainless Clips, Clip ins are Not Easy to Break and Shed. Solid Color, Balayage and Highlight Color to Meet Different Needs and Different Hair Color.