1. Friendly to Thin Fragile Hair Instead of attaching hair extensions directly to your strands, the invisible wire hair extensions sit on top of your head using a nylon wire which means no extra pressure to your hair. They are great for those with thin or fragile hair, and who have a sensitive scalp and find it hard wearing clip in hair extensions 2. Glorious Length Volume in 1 minute invisible wire hair extensions use a transparent wire to add length and thickness without tape, glue for damage easy on and off application in less than 1 minute 3. Comfortable and Secure for All Day Use Upgraded thinner and softer lace weft, it lays flat to the scalp and you won't feel any bump, virtually undetectable. Extra 2 security clips added on weft will keep the hair extension stay in place and not slip or fall out. PS: You can remove these 2 clips if you have sensitive scalp 4. Natural, , Luxurious Japanese technology heat friendly synthetic fibers, with a natural looking and soft feel that perfectly mimic real human hair while permanently holding its curls. Same amount of hair yet 30% lighter than other fiber