OUNONA Bath Treads 15" Shower Treads - 12PCSClear Safety Treads Set --- Comes with 20 clear bath treads,Material: Synthetic resin. Primer: Silicone oil paper.Size:Approx. 38 * 2cm. Easy to Use --- Safety shower treads is easy to use, clean the surface first, then stick firmly it on the smooth surface, strong adhesion and maximum grip providing long lasting slip and fall protection, and they can be removed without any residue. Strength&Durability --- Bath tub treads is made of soft PEVA material, non-toxic and non-fade, safe and comfortable to use;Strong Adhesion with mold and stain resistance for easy cleaning and long lasting slip and fall protection.Non-slip concave and convex surface lines prevent slips and falls. Wide Application --- Suitable for any slippery surface, such as bathtubs, shower stalls, bathroom floors, pools, doorway, staircase, treads, steps, ladders, ramps, scaffolding, buses, etc, preventing slipping and ensuring safety. Please note --- You must first clean the surface with an alcohol based cleaner before application. Failure to do so will potentially cause the adhesive to fail.