A hair fastening device having the ability to be rolled into a person’s hair and then secured within the hair by sliding the device together. The device may further include at least one circuit carried by the dielectric substrate, and an antenna carried by the dielectric substrate adjacent an end thereof and electrically connected to the at least one circuit. The tub edge hook may be in the shape of a character’s legs. , provided that the liquid crystalline polyester has a deflection temperature under load of 280-340\xb0 C.