The InterDesign Suction Toothbrush Center is well-suited for use in bathtubs, showers and bathrooms. The suction cups provide suction on smooth non-porous surfaces such as tile, glass, fiberglass and some metals. The Toothbrush Center has a cup with a multi-toothbrush holder that holds up to 3 toothbrushes. The durable clear plastic used provides long-lasting quality.