Above-Ground Pool & Hot Tub Underlayment Pad — Heavy-Duty Black Geotextile (Precut, Trim-to-Fit)

Recyclable, moisture-permeable design: This under-pool pad is made from recyclable materials and allows water to pass through while blocking debris and sharp objects that could damage your liner, promoting longer liner life and eco-conscious pool care. Heavier, not softer: At twice the weight of comparable pads of the same size, it delivers superior puncture resistance but provides only subtle floor cushioning; its ground cushioning is weaker and less effective than sponge pads. Reinforced construction: Built from thickened black industrial-grade geotextile fibers — a durable blend of polyester, acrylic, and cotton — the material is 1.5 times thicker than similar products and is completely impervious to light for extended durability. Reliable protection: Ideal under round pool liners, this geotextile layer forms a strong barrier against punctures, tears, and abrasions caused by sharp items or rough surfaces. Easy to fit: Supplied precut for convenience yet simple to trim, the hot water bath tank pad is sized to suit most bathtubs and pools. It can be cut to match circular, oval, or irregular pool shapes as needed.