[Black Penguin] Bathtub Bath Tub Treads Non Slip Appliques Sticker Mat These non-slip Penguins make bath time safer and more fun! Each package contains five non-slip Tub Tattoos. Easy to install, easy to clean. Just peel and stick! For use on non-textured surfaces. 4" diameter. We recommend 3 to 5 packages for full tub coverage.