Non-porous and hypoallergenic. Tapered for easy insertion. Suction cup base sticks firmly to any smooth surface. Waterproof. This ribbed plug is made of non-porous and hypoallergenic silicone, and has a penis shaped tip. Because of the suction cup base, the plug sticks firmly to any smooth surface. The ribs on the shaft will give exciting sensations while inserting.Diameter: 3.0 cm. Length: 13.5 cm.Wash with soap and water before and after each use.