1. Burn: the hair extensions you bought as our hair, made of protein not plastic, that is to say, will get ash when burning for the real human hair extensions, and get sticky ball for the synthetic hair.
2. Thick Ends: thick ends means that most of the hair of the hair extensions are longer, and better experience.
3. Smooth: maybe you know that, the real human hair have cuticle on it, and will keep smooth if all the directions of cuticle are same, then no tangle.
4. Technology: the hair extensions produce by skilled workers will be no shedding because the better technology.