18FT Round Pool Liner Pad for Above Ground Pools, 165 GSM Thickened Puncture-Resistant Under Mat (19FT Actual), Heavy-Duty Underlayment with Metal Grommets
Condition: New
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
20 left in stock
Arrives
Friday, May 8
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Size: R18FT
Features
- Material: 165 GSM Heavy-Duty Build Expertly crafted from high-quality PE material, our ground cloth features a 165 GSM heavy-duty density. The 12x12 high-density mesh and tight weave offer maximum strength and puncture resistance, ensuring a long-lasting, sturdy barrier for your pool bottom
- Size: 1FT Extra Coverage To ensure your pool liner is fully protected, each ground cloth is engineered with 1FT of extra coverage beyond the standard pool size. This generous overhang provides a comprehensive safety margin to protect the pool's perimeter and keep the surrounding area free from mud
- Features: Extends Liner Life This heavy-duty underlayment acts as a powerful physical shield against rocks, stray gravel, or sharp debris that could damage the pool floor. By providing cushioned comfort and a smooth base, it significantly reduces wear and tear, effectively extending the service life of your pool liner
- Installation: Secure Metal Grommets Designed for stability, this pool floor base pad features reinforced black polyester edging with integrated metal grommets. These heavy-duty eyelets allow you to secure the mat to the ground with stakes (not included), preventing shifting or bunching during active use
- Compatibility: Versatile Outdoor Use This versatile under mat is perfect for inflatable pools, ring pools, and framed pools. It provides a stable foundation on any backyard surface, including grass, dirt, sand, gravel, concrete slabs, and wooden floors, making it the ultimate protector for any pool setup
Product Dimensions: 17 x 2 x 2 inches
Item Weight: 9.99 pounds
Manufacturer: REGMICS
Item model number: LP-R18FT
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, May 8
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: R12FT
This pool liner is great quality and very versatile. It has a reinforced edge with grommets, which makes it easy to secure if needed. It actually measures closer to 13 ft, so it fits well under a 12 ft pool, and I use it under a 10 ft inflatable pool to give extra coverage around the edges. It lays flat without needing to secure it and helps keep dirt and grass away while protecting the bottom of the pool. The grommets also make it usable as a cover. Its thick, we haven't had any leaks or tears and the round shape looks more polished and intentional with a round pool than a square tarp. Overall, it’s a durable, well made option. It’s on the higher end price wise, but worth it for the quality and flexibility.
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Reviewed in the United States on April 5, 2026 by RJ
Size: R24FT
Quality pool liner in cooling blue color. Nice thickness and material composition to avoid punctures and avoid leaks. This quality liner is durable to last and functional for various use. For me, it's a perfect more durable & reusable table cover for art work. It's a large round of coverage with grommets to secure placement. It's a definite security feature to help particularly with pool bottom maintenance and offers peace of mind to proactively resolve possibility of water disasters. This liner particularly helps avoid disasters from debris on the ground that a pool sits atop of, which could possibly cause punctures on the pool bottom. The price is worthy of the quality liner offered. I highly recommend.
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Reviewed in the United States on March 31, 2026 by Verified Amazon User
Size: R24FT
It's big, it's round, and it's heavy, certainly going to serve well. Could easily be a ti-pi floor, a tent ground cover, it's useful beyond just going under a pool. It is rather pricey, but that doesn't mean over-priced.
Reviewed in the United States on March 18, 2026 by William Axsom
Size: R18FT
I got the REGMICS 18FT Round Pool Liner Pad for Above Ground Pools when setting up our pool, and it made a noticeable difference. The pad added a nice protective layer between the ground and the liner, which gave me peace of mind about rocks or roots causing damage. It was easy to lay out and fit perfectly under our 18-foot pool. I also like that the thickness adds a little extra cushioning under your feet when you’re in the pool. Overall, it feels like a simple upgrade that helps protect the liner and extend the life of the pool. Great value for the price.
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Reviewed in the United States on March 16, 2026 by LeBon #26
Size: R18FT
The material feels thick and durable, definitely better than the thin foam sheets I’ve used in the past. The 165 GSM fabric has a nice weight to it, and once it’s laid out, it doesn’t shift or bunch up. The pad is slightly oversized (19FT), which made installation easier because I could trim it for a perfect fit. I also appreciate the puncture‑resistant design — after leveling the ground, I still had a few small rocks and roots I couldn’t remove, and this pad gives me peace of mind that they won’t damage the liner. The metal grommets are a nice touch. I didn’t need to stake it down, but it’s great to have the option if you’re working in windy conditions. Overall, it feels heavy‑duty, installs easily, and adds a layer of protection that should help extend the life of the pool liner. I’d definitely buy it again
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Reviewed in the United States on February 20, 2026 by Jayleyn
Size: R15FT
The media could not be loaded. This is exactly as described, except it’s more navy than blue. Very thick and shiny. Looks durable. Not too heavy to carry it around. We’ll use it under the bouncy house and the kid pool to protect the lawn. The grommets on the edges are secure. Looks well stitched. It is a good price for a large waterproof mat.
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Reviewed in the United States on March 8, 2026 by ek