... 's very good to cooperate with the factory .Super Thin PU Men's Toupee 1. Base design: top with fine Mono ... crown, Right crown, Center crown, Left part, Right part, Center part, Left 1/2 part, Right 1/2 part, Pompadour. 6. Ventilation: Single flat knot ... , Double flat knot, Single split knot, Double split knot, Injection and looping ventilation (on PU ...