1. With large number and strong suction cups, firmly fix the pillow and cushion on any smooth bathtub surface (not for texture surface). Wet each suction cup before use, and then press it onto the surface of the bathtub 2. Our bathtub mat and bathtub pillow are made of PVC foam material The multi-layer mesh polyester fiber filler allows air to pass through and dry quickly. It is smooth and comfortable to use 3. Simple and fashionable design style perfect match with your bathroom, there are 4 kinds of colors for you to choose, to meet your different needs. 4. The size of bath mat is 17Ã??36", the size of pillow is 7.48Ã??11.4".The enlarged bathtub mat size makes you more relaxed and comfortable when bathing. The bathtub pillow is thicker, 2 inches thick.