REGMICS 12ft Round Above Ground Pool Pad, 300G/M² (9oz/yz²) Heavy Duty Pool Mats for Floor, Seamless Puncture Resistant Under Pool Mat, Professional Ground Protector for Gravel & Concrete, BlackBrand: REGMICS Color: Black Features: 12ft Easy Installation Pre cut to an 12ft round design, this under pool mat is ready for immediate use. For soft wall pools, simply place the pool ground cloth on level ground and set your pool on top. For hard wall pools, lay the pool mats inside the structure before the pool liner installation. It provides a perfect fit without trimming, though the fabric can be easily cut with scissors for a custom fit if