Discover the invisibobble® WAVER. It is gentle on the hair and has no metal or sharp edges. The curved underside of the WAVER is adapted to the shape of the head. It can, therefore, be easily positioned in the hair and offers a particularly high level of comfort. Meet the world's favorite spiral hair tie: Whether Everyday, Fashion, Athleisure, or our Limited Collections, each and every invisibobble spiral hair tie has the same HAIRLOVETECH traceless technology, scientifically proven to cause less damage, less pain, and less kinks. Here at Invisibobble, we like to keep it simple with hair accessories. From Spiral hair ties, bobby pins, scrunchies, headbands and more, we guarantee our Invisibobble hair care accessories to work while you work, go out, or work out. Polyurethane