Both brands of tampons are made with cotton and rayon fiber.
O.B tampons contain additionally polyester.
Tampax boasts it’s 3-way leak protection abilities. It has an anti-slip grip for secure placement, a built in backup skirt that absorbs fluid quickly, and a newly redesigned width-expansion to fit the natural shape of a woman.
O.B. Tampons, on the other hand, boast fluid grooves for locked-in protection and has no applicator.
Many believe O.B tampons are superior to other tampons with regard to comfort and convenience.
The best way to know which is better is to try it yourself and see which one you are most comfortable with.
O.B tampons are offering free samples and this would be a great opportunity to try them without cost.