Cambodian Hair-Unprocessed Virgin Hair 3.5oz, Naturally Soft, No Tangling, and Shed Free, Can be Dyed and Bleached. Imported directly from Cambodia, Single Donor, Unprocessed, Double drawn, very thick from the weft to the ends. Will last for longer than 2 years if cared for properly. If purchasing lengths under 18' 2-3 bundles could do a full install. If you are purchasing lengths over 20' we would recommend 3-4 bundles for a fuller and thicker look.