HD is the thinnest lace of all. HIGH QUALITY. It gives you that melt look without glue. Perfect for glue-less units. A Lace Frontal is like the icing on a cake to a sew-in. A frontal can be worn and look just like your hair . It can be parted anyway and keeps your hair protected. Pick the perfect texture to compliment your bundles. Our HD Frontal has the PERFECT lace for the PERFECT MELT!