Function and protection: This over ground pool liner pad adds a soft cushioning layer under the pool bottom, helping to prevent damage to the liner and ground surface. Material and durability: Made with dependable geotextile materials, it resists punctures, tears, and abrasion to provide longlasting protection for your pool. Compatibility and fit: Precut to fit most over ground pool styles and sizes, compatible with both softsided and hardsided pools for an easy installation. Easy use and installation: Simply lay the sand barrier as directed and place the liner pad under the pool to create a protective barrier against punctures and debris. Use scenario 1: Setting up a aboveground pool on a gravel or rocky base with a sand barrier to cushion the bottom and extend liner life. Use scenario 2: Replacing an worn or thin patch of ground under an existing pool to restore protection and reduce risk of punctures. Use scenario 3: Seasonal pool setup where a quick, precut pad simplifies assembly and provides reliable protection year after year.