super fine swiss lace base vs french lace base

[raye321]

Can anyone tell me exactly what is the basic difference between super fine swiss lace and French lace. I'm thinking of getting a hair system with super fine swiss lace front and French lace base but considering a super swiss lace base. I know the French lace is a bit coarser. Does this mean that it is thicker? or the holes are larger than the swiss lace?