Many who wear sew in or bonded weaves, use the Lace Closures to cover the top area of the head where the weft hair ( track hair, weaving hair ) is bonded/sewn down. They are used to cover the area that is know to many as the "leave-out". Those who are very familiar to wearing weaves know that the most important part of weaving is to make sure the area at the front hairline & crown area are well blended. They can also be used with various other weaving methods. You can apply them with weaving thread or with liquid/tape adhesives. No one will ever know it is not your natural hair growing out of your scalp!