... is a smooth mono (sometimes called SB) front, top and crown.It has a soft see ... full skin ( different skin thickness ) , skin with lace front etc . there are about 45 different base construction . 5 ... bleached knots to make natural looking , single knots in front hairline , double knots in other area . triple ... 50% to 160%7. baby hair in front or around perimeterHigh quality and Best service could be ...