Clear Starburst Bathtub Bath Tub Treads Non Slip Applique Sticker Bath Mat Improve the safety of your tub or shower. Each package contains 21 star shaped tread pieces. Durable for long-lasting non-slip safety. Easy to install, just peel and stick. For use on non-textured surfaces. Tread Piece Sizes - Each package contains three different tread sizes. Large: 4.5" by 4.5". Medium: 3" by 3". Small: 2" by 2".