Our Brazilian Virgin Hair comes from single donors making it among the highest quality hair of choice. Our Virgin Hair has not been chemically altered or processed, nor at this time do we offer any type of coloring service. However if our customers do wish to have their purchased hair treated; our hair is 100 % compatible. Each bundle of hair weighs between 3.2 OZ - 3.5 OZ, which is about 100 grams. We recommend at least two bundles when using lengths 14-20 inches to complete your entire head. If selecting lengths over 20 inches we recommend using 3 bundles or more, lengths Over 24 inches we recommend using 4 bundles or more, and lengths over 28 inches we recommend 5 Bundles or more. Check out our Bundle Deals for SAVINGS NOW!!