New Seamless Silicone Wefts for Ultimate Comfort: The upgraded clip-ins use PU wefts for a seamless, lightweight fit. Made from 100% Remy hair, they’re soft, thick and no dryness and knots. Style and dye below 390℉. With good care, they last 3-4 months | 7 Layers Soft Invisi Edge Strips to Hold the Hair - No Stiff & No Pleated: The Invisi Edge clip-ins use 7-layer PU glue bonding for a lightweight, shed-free experience. The soft PU weft resists creases, and the transparent glue is highly invisible | 7pcs Clip in Hair Extensions: The invisible clip-ins come in 7 pcs per pack: 8" (1), 6" (2), 4" (2), 2" (2). Weight: 110g, Length: 14-22". For thick hair: 1-2 packs for weight, 2-3 packs for length. For thin hair:1-2 packs for length, 2-3 packs for weight | 5-10 Minutes to Install: Seamless clip-in extensions add volume and length quickly, taking just 5-10 minutes to wear and 3-5 minutes to remove. Ideal for thin hair, they offer a better fit than double weft clips. Follow our tips for perfect color match | Popular Colors that Match Your Hair Perfectly: We offer popular solid and balayage colors that blend seamlessly with your hair. Please note color may vary due to monitor and lighting differences. If unsure, use our color matching service for assistance