... knot, Double flat knot, Single split knot, Double split knot, Injection and looping ventilation (on pu base), Underventilation. 1. Hair type: 100 ... 80%--150%). Hair style free style,with photo from customer and others. Hair texture Silky straight,yaki straight,kinky,wave, ... requirment. Lace Material Swiss lace, French lace, Fine Mono and many kinds of lace for customer choice. Lace color transparent ...