is compatible with most portable pool ladders for above ground and in-ground pools. Anti-skidding design: The pool pad is designed with an anti-skidding and wear-resistant layer, which greatly increases the friction between the ladder and the pool liner. This uneven design makes the ladders more stable, protecting your safety when you climb the ladder. Protect your pool liner: you can put the ladder pad under the ladder to protect your pool liner from abrasion and deformation caused by the base of the ladder. What's more, the pool ladder mat can keep your pool ladder stable, thus keep you safe. Multi-wear: This pool step pad is compatible with most portable pool ladders. When not in use, it can be rolled up for convenient storage. Most importantly, the ladder pad can be used in all wet and slippery places to prevent your fall, such as in front the door, bathroom, kitchen, etc., as well as your decoration because of its bright color. Note: The data are all manual measurement, please allow some 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.