This product is 100% unprocessed virgin human hair. Collected from single donors, all cuticles are intact & aligned to same direction, eliminating any possibility of tangling. Double strung machine wafts ensure that hair will not shed. This hair is reuseable, easy to maintain & guaranteed to last for several years. It can be dyed, bleached, curled & rolled to achieve different styles. 400g (4pcs) for very full head.