POOLHACKER【2025 Upgrade】 21 ft Winter Pool Cover - 21ft Round Above Ground, 4 Foot Overlap Extra Thick 420D Pool Cover with Pulley and Cable (Red)
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
20 left in stock
Arrives
Wednesday, Apr 22
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Size: 21FT
Color: Red
Features
- Handle The Harshest Weather -Our pool cover is designed to handle the harshest weather conditions, withstanding even the coldest temperatures of -10 F (-25 C).
- Enjoy Crystal Clear Water- Protect your above-ground pool and keep the water crystal clear by shielding it from unwanted guests like debris and rainwater.
- Dependable Pulley Cable - Our dependable winch cable ensures that the cover is securely fastened, providing you with peace of mind.
- Durable Fabric & UV Protection - Poolhacker winter pool cover boasts a 14 14 scrim count and the density of 185 grams. The LDPE coating protects against solar UV radiation and does not allow water to overgrow.
- Super Windproof Design - With our super windproof design and extra-thick material, you can trust that your pool will remain safe from the elements year-round.
Size: 21FT
Color: Red
Material: Polyethylene (PE)
Brand: POOLHACKER
Product Dimensions: 21.65"L x 16.93"W
Brand Name: POOLHACKER
Model Name: NU_YC058-YX-21FT_FBA
Model Number: Pool Cover
UPC: 768837700318
Manufacturer Part Number: NU_YC058-YX-21FT_FBA
Item Type Name: Pool Cover
Manufacturer: POOLHACKER
Installation Type: Floating
Color: Red
Shape: Round
Pattern: Solid
Size: 21FT
Item Dimensions L x W: 21.65"L x 16.93"W
Item Weight: 9.68 Kilograms
Material Type: Polyethylene (PE)
Product Care Instructions: Occasional cleaning to remove debris and dirt
Closure Type: Zipper
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Apr 22
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
Excellent Protection and Value for Winterizing I couldn't be happier with the POOLHACKER Winter Pool Cover. After years of struggling with cheaper, flimsy covers that barely lasted a season, this one is a serious upgrade. Installation and Durability: The cover feels incredibly durable and heavy-duty right out of the box, which gives me confidence it will handle harsh winter weather, including heavy snow and ice. The installation was surprisingly straightforward. The included winch and cable system made securing the cover to my above-ground pool much easier than expected, allowing me to get a tight, reliable seal with minimal hassle. Performance: This cover excels at keeping debris out. which translated into a much easier, faster spring opening. Less mess in the pool means less time scrubbing and balancing chemicals. This cover truly protects your investment and saves you significant work when the warm weather returns. Bottom Line: If you're tired of replacing pool covers every year or dealing with a nasty mess when you open your pool, the POOLHACKER cover is worth every penny. It's a high-quality product that delivers on its promise of superior winter protection.
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Reviewed in the United States on October 31, 2025 by Angel Young
Size: 21FT
Color: Cerulean
Seems very thick. Grommets seem solid. Included cable seems strong. Survived several nights of high winds so far. Fit our 21 foot pool nicely
Reviewed in the United States on October 30, 2025 by zoda19
Size: 28FT
Color: Blue
So impressed with this liner. I have never had one so nice. You can’t see through it, yay. Super thick, very nice whatever the band is called that the grommets are in, they will not be ripping, very well made. Ratchet strap is very nice too. My only problem is that my pool is 27ft round and only thing available was a 28ft so we have a little more than we care to have hanging over but we don’t mind. This liner should last us several years.
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Reviewed in the United States on November 2, 2025 by Amazon Customer
Size: 21FT
Color: Blue
Very pleased with this pool cover. Well made of pretty thick material with good strong grommets. Generous in size too. We have an 18 ft. pool but we ordered the 21 ft. cover, it practically touches the ground all the way around. Should weather our windy winters.
Reviewed in the United States on October 18, 2025 by Carol
I recently purchased the Poolhacker winter pool cover for my 18-foot above ground pool, and I couldn't be happier with my choice. The cover fits perfectly, providing complete protection against debris, snow, and ice during the cold months. The material feels durable and robust, giving me confidence that it will withstand harsh winter conditions. I appreciate the reinforced edges and the heavy-duty stitching, which seem designed to last season after season. Installation was straightforward, and the included instructions were easy to follow. What I love most is how well it keeps my pool clean. I no longer have to worry about leaves and other debris contaminating the water, which saves me a ton of time when spring comes around. Plus, the cover has held up beautifully against heavy snowfalls, and I haven’t noticed any signs of wear or tear. Overall, I highly recommend the Poolhacker winter pool cover to anyone with an above ground pool. It’s a fantastic investment for maintaining your pool's cleanliness and prolonging its lifespan.
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Reviewed in the United States on October 22, 2025 by The Noll Girls
I purchased this cover for the winter of 2024-25. I just removed it. This covered my small 18" diameter above ground pool very well. I had about 18" of overhang around the diameter of the pool. The cable and ratchet system is typical for pool covers, with care it should last for years. The pool cover did well over the winter time with the weight of the cover and a little water on top from rain, it stayed secure even on the windy days where we had wind gust of 40+ MPH. Before removing the cover, I used a sump pump to drain the water off the cover. Pool water way crystal clear. The grommets were all placed in a stronger type of fabric and they were all tight and secure (unlike my last cover). I think this cover will last for years with proper cleaning before storage. Highly recommend.
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Reviewed in the United States on May 4, 2025 by Fredf861
Size: 21FT
Color: Blue
I have owned and covered pools for over 50 years. I can say materials wise, this is the best cover I have ever used. I got into the habit of buying a $40 cover every year and tossing it when I uncovered the pool in the spring. This year I figured I'd spend a little more and try to find one that would last. I was suprised at the thickness of the material, but even more so that the grommets were encased in a canvas like material. The grommets usually rip away from the plastic on cheaper covers during the install. Not on this one. We got a new pool this year and I had to improvise on how I usually put my cover on which meant the cover laid on the water longer than I like. Not one drop of water leaked through during that time. Not so with the cheaper covers. The covered wire and weak aluminum tightening mechanism are standard and Ive never used them. You'll always do better with rope. Time will tell how this fares in the long run but from what I see, barring a one off event, and cleaning and storing it properly, there's no reason you wont get at least 5 years out of this in the real world of northern winters. Still cheaper than the $40 ones. Its def worth it.
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Reviewed in the United States on October 17, 2024 by Bustoff
Size: 21FT
Color: Blue
Bought this one because the one I bought Sept. 3rd was shipped but never "out for delivery". I was suppose to receive it by Sept. 7th & never did. I was suppose to be able to ask for a refund when I ordered this one & when I did, they claimed it was shipped so they couldn't give a refund, instead I could send it back when I received it lol. Well low & behold, this one came in when they said I would get it, & of course I received the other one too lol. This one seems very heavy rolled up for a 21' pool, & we will be using it. I can't say much more than it seems durable & worth the cost. This company stands behind what they say & ships it when they say they will. Very happy with this buy! Thank you!
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Reviewed in the United States on September 11, 2025 by Amazon Customer