A web-like hair system pulls your own hair through openings to give you volume and density. These systems are only for people who have some hair and require thickness or length.
Lace is a fine netting that has an incredibly natural hairline. This is for people who have little or no hair in front. This system allows very thin density for people who do not want a lot of hair.
Thin skin is a thin membrane into which hair is finely inserted. This allows individuals to expose their scalp. Often, this system is permanently attached with a very low-profile bonding agent.
Fine Mono is an ultra-fine net, which is durable and can be used with human hair or synthetic fiber. The variations of this design are so numerous it would be impossible to list all of them.