Laced Up Collection Units are made with your choice of 3-4 bundles and a HD 5X5 closure. These units can be worn glue less if you desire. All hair used is 100% Virgin hair that can be colored and bleached (only professionally recommended). These units are sewing machine made personally by Laced Up Collections. The hairline comes pre-plucked with the option to add baby hairs if you desire. The knots are bleached as well. Units typically last 2+ years with proper care and maintenance.