Powerful Suction Cups: The shower mat is made of PVC and features 169 special large suction cups, which can be fixed on a smooth and clean surface and prevent sliding.Excellent Drainage Design: The bathtub shower mat has 149 drainage holes, the middle of the mat has a large drainage hole, and the entire mat has small holes, which can quickly drain water and keep the mat dry and clean.Machine Washable: The non slip bathtub mat is machine washable, just machine wash in cold water and air dry. We recommend that you clean your bath mat regularly to keep its fresh appearance.Wide Range of Uses: Our shower mat measures 21 x 21 inches, provides excellent coverage, fits most standard shower stall, and is a great choice for homes, gyms, spas, etc.Tip: Please fix the suction cup firmly before each use to prevent slipping. The bathtub mat will only stick to a clean, smooth surface. Not suitable for textured, tiled or matte surfaces.