Top Smart Wavy 18" by Jon Renau is a clip-in hair synthetic topper is designed to integrate naturally and easily with clips into your own hair. It is worn over the part of your existing hair adding volume and length. Ideal for medical crown hair loss or thinning. Top Smart is enforced with a monofilament top that resembles the most realistic hairline and enables parting versatility and multi-directional styling and an impeccable extended lace front offers you a natural hairline allowing for off the face styling. The premium synthetic fiber obtained mimics the appearance and movement of natural hair.