The o.b. Original Super Plus Tampons with curved grooves efficiently channel fluid into the interior of the tampon, and the StayDry technology ensures a dry retrieval string and a clean feeling. The o.b. Original Super Plus Tampons are ideal for very heavy days. Additionally, the Original Tampons are gynecologically tested, contain a 100% plant-based tampon core, and are free from harmful chemicals, chlorine bleach, and perfume.