MACHINE WEFT HAIR include single machine weft and double machine weft hair. Our Vietnamese hair is 100% real human hair (no henna, no synthetic/artificial hair), 100% virgin hair (one woman's hair), 100% natural hair (have full cuticle, original from women, not re-treated with chemical, not re-dyed, not re-bleached) and 100% remy hair (never tangled, all hair pieces inside a remy hair bundle have the same direction from root to tip), natural dark color (#1,#1B or #2). Only washed with shampoo to clean dirty. Quality of hair: thin, strong, soft and silky -Made from REAL VIRGIN HAIR without processed, full cuticle , very long lasting -Color : natural color black, dark brown, brown, grey and colors required by customers -Textures : natural textures straight , wavy, curly. 1. 100% human hair. No chemical, no colored, no dyed 2. Soft, shine, straight 3. Unprocessed, without nits, No lice, insect… 4. Lengths of hair: from 8 inches up to 32 inches.