The Viva Hair System from DHR is an all skin hair system with the advantage of single hair fine knotting. The skin is medium thin and the hair is tied using our advanced knotting technique, not looped, which gives this system good longevity.The large 8 X 10 size allows for re-sizing down to any size.This is a great choice for those who need a natural look and extended longevity in a hair system.