O.b. Original Normal Tampons with curved grooves provide reliable protection and StayDry technology for a dry withdrawal string and a clean feeling. The curved grooves of o.b. are designed to efficiently and safely direct fluid into the tampon, ensuring you feel reliably protected. o.b. Original Normal Tampons are perfect for medium to heavier flow days. Since the tampons are individually wrapped, they are ideal for on-the-go use. The convenient twist opening allows for easy and quick access.