Mono-extension is made with hand-knotted. Remy hair on very thin mono-mesh based (with Poly-Urethan coating). The normally package is six wefts which are 11-inch-wide and 18-inch-length hair. This extension is seamless without bumps when it is completed. No adhesive is used. No clips or chemicals. Fast, easy and profitable way of applying extension. My email: sales AT seaforesthair DOT com Our website: www DOT seaforesthai DOT com Our Remy hair website: www DOT remyhaircn DOT com