SlipX Solutions Adhesive Bath Treads: Penguin Tub Tattoos Add Non-Slip Traction to Tubs, Showers & Other Slippery Spots (Kid Friendly, 5 Count, Reliable Grip) These tub treads make bath time safer and more fun by providing traction on all kinds of slippery surfaces! Each package contains 5 Penguin Tub Tattoos. Easy to install and simple to clean. Reliable grip, year after year. This Tub Tattoo measures 4 inches on its longest side. Designed for use on smooth surfaces. Some surface textures may affect adhesion. Not for use on refinished surfaces.