... #, 3#, 4#, 6#, 8#, 9#, 10#, 12#, 14#, 16# etc, single color, mixed color, highlight color, steaks color, two-tone etc ... the perimetern ,at the front hairline or without.4.knots:bleached knots ,single knots ,double knots are aviailable.swiss lae with stretch cap5.silk top ...