These pre-looped weft hair extensions are machine-made double-weft hair extensions with silicone-lined microbeads sewn onto the extensions. These extensions are easy to install and remove, and will not cause any damage to your natural hair. They will seamlessly blend with your hair. Hair Details: -Hair Texture : Kinky Straight -Hair Color : Natural Color (Black) -Reusable , Healthy , Thick , High quality -7 pcs per set: 10"x1, 8"x2, 6"x3, 5"x1 -Weighs:16"-20“ about 100g 22"-24” about 120g -Microlink Weft can be used to add Length & Volume to your natural hair.If your head is large or if you have very short hair, you might need two sets for a full head.