NOTE: Smooth clean surface only. The bath mat for tub non slip only attaches to smooth clean surfaces; NOT for using on uneven textured, tiled and dirty surfaces, which may weak the suction power and the mat won't stick. Strong Grip: Superior bathtub mat non slip features 200 big suction cups, the different suction cups adsorption stronger than other small suction cup that keep bathtub mat securely sticks well and stays on smooth and clean tub, protect your family from slipping or falling. How to Stick Firmly: Pressing on a few of suction cups with your hands to anchor the bath mat for tub non slip kids and then walking on the rest is an efficient way to set the mat in place. Soak the non slip tub mat with warm water for 10mins before the first use can help it stay flat and stick firmly. Full Cover: Large bath mat for baby 100 X 40cm and provides maximum coverage. Many other mats are smaller leaving areas of your tub exposed. This versatile non slip bath mat covers an extensive range