The Janet Collection Mambo Twin Open LoopTM Water Wave 18" is soft hair with strong tight curls. Made with a mixture of 100% toyokalon and kanekalon fibers, this crochet hair is patented with a one-of-a-kind design which allows the user to quickly tighten loops with a double loop feature, while also holding onto the hair and protecting it. It's easy to crochet and gives a look that stands out.JANET COLLECTOON