⊙ EXCELLENT NON-SLIP: COMUSTER superior bathtub and shower mats with 200 special large suction cups are more adsorptent than other small suction cup and help hold in place on smooth and clean surfaces. Our bathtub mat is a great choice for the home, gym, spa and more!⊙ UTILITY & SAFETY: Domed designs are like pebbles, which provide massage experience in shower time, also it brings necessary anti-slip.⊙ BEST CHOICE:Our extra large mat is 39 inch x 16 inch，which provides maximum coverage. A good drainage system consists of 176 drain holes that allow water to circulate. Enjoy a healthy better life with this bathmat on the tub or shower floor.⊙ MACHINE WASHABLE: Our durable bath mat is machine-washable and easy maintenance. So you can simply toss ⊙ the mat into the machine and clean it on cold water with gentle detergent (no bleach)and gentle cycle. Then hang to dry. We recommend rinsing and air-drying your bath mat periodically to remove oily and slippery buildup that may occur over time.⊙ CAUTION: Clean surface before using.Wet surface.Place mat in position with suction cups down. Press down to make the cups grip surface and hold. Ensure mat is securely in place. Mat will only attach to clean, smooth surface. Not for use on textured, tiled, or non-smooth surfaces. Do not use bath oils – may cause slipping. When finished, remove mat and rinse.⊙Instructions for use: First spread the bath mat on the slippery floor or inside the bathtub.Then press the surface of the mat to discharge the air in the suction cup and the suction cup firmly sticks to the ground.Make sure that the mat is no longer moving, you can stand on it and use it. After use, remove the mat and rinse it off. You need to pick up the non-slip mat and hang it for storage or store it against the wall. Drain and air dry to make it clean and hygienic next time you use it.⊙Important: Please measure the size before placing an order! thank you very much.★Note: When you receive the package, as it is rolled up and packaged, please fully open the cushion, fix it in place, use hot water (80 ° C/176 ° F) or so to heat it in the rolled up place, and lay it flat on the ground until it is cooled before using it