Crafted from 220GSM dense non-woven geotextile fabric, this round pool liner pad serves as sturdy underlayment for above-ground swimming pools. It forms a solid protective layer to stop punctures, abrasion and ripping caused by underground stones, tree roots, broken glass and rubble, effectively lengthening the service life of pool liners and cutting replacement spending. The integrated weed barrier stops grass and weeds from growing upwards to avoid dirt accumulation on the pool bottom and cut daily maintenance workload. You just need to spread the pad over flat ground, trim excess parts with a utility knife to match round, oval, square and rectangular pools freely. It brings soft cushioning for comfortable standing inside the pool and fits evenly on grass, dirt, concrete and brick patio ground. UV-stabilized and moisture-proof non-woven fabric adapts to long-time outdoor use, perfect for seasonal temporary pools and fixed above-ground pool construction. Color: black.