Choice 1: (usually used on women’s units):  It  is constructed of three layers. The hair is hand knotted on the middle layer---french lace, then the hair is pulled out from the middle layer to the outer layer,which is super fine mono  (softer than fine mono with smaller holes).  It seems as if the hair is growing right from the scalp, and you cannot see the knots from the outer layer, because they are tied on the middle layer. The inner layer is a net that feels comfortable to the customers' head, which is Chinese silk.

Choice 2 : (usually used on men’s units) :  It  is constructed of two layers.The hair is hand knotted on french lace,then the hair (the difference:we also pull out the returned hairs) is pulled out to the outer layer,which is super fine mono. You also cannot see the knots from the outer layer. This effect is better than the above one.