Search  for anything...

Robelle 21 ft Blue Winter Pool Cover for Above Ground Pools, 3 ft Overlap (24 ft Cover Size), Solid 7 x 7 Scrim, 2.2 oz/yd2, 8-Year Warranty, Style: 4621A

  • Based on 0 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $9.39 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

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: 19 left in stock
Fulfilled by Amazon

Arrives Thursday, Apr 23
Order within 5 hours and 55 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Style: 3-ft. Overlap


Pattern Name: 21-ft. Pool


Features

  • Winter pool cover for 21 ft. round pools. This pool cover has a 3 foot overlap, which is the material included beyond the pool size. Since 1973 Robelle has been offering the best pool covers for pool owners. This cover has 50% more overlap than other brands, making it a easier pool cover to install. Including overlap, the cover size is: 24 feet. Includes winch and cable for easy installation.
  • This pool cover is constructed with standard polyethylene that weighs 2.2 ounces per square yard (74 grams per square meter). The material is woven with a 7 x 7 scrim. Scrim is the number of threads per square inch. Material weight and scrim are the best indicators of the overall durability and expected longevity of your pool cover.
  • With over 50 years of experience, Robelle has designed this Standard winter pool cover with an exceptional focus on quality for this season and years to come. Constructed 10% heavier than industry standard. Backed by a 8-Year Warranty that is the best in the industry. We are real swimming pool experts that are here to help with all of your swimming pool needs.
  • This is a solid winter pool cover that will not allow water to pass through. More pool owners have trusted Robelle for their pool closing needs than any other brand. Exceed your expectations when you choose a Robelle brand pool cover.
  • This pool cover will protect your pool from winter elements throughout the offseason. Designed for superior protection against snow and ice.
  • Use the included winch and cable to secure the cover through the grommets. This pool cover is designed for optimal performance in high wind areas.
  • For pools with decks, install on top of the deck using vinyl water weights, placing them on top of the cover. For pool with partial decks, use water weights on the deck and use the winch and cable around the perimeter running the cable under the deck if possible.
  • Cover should be able to float loosely on the water, consider going up a pool size if you have large top rails.
  • Ice equalizer pillow sold separately

Description

This is a solid winter pool cover. Solid pool covers do not allow water to pass through their material. This winter pool cover features a 7 x 7 scrim. The polyethylene material used for this cover weighs 2.2 oz./yd2. Includes black underside. Please order by your pool size, as the overlap goes beyond the pool size listed. This cover includes a three-foot overlap. If you have a large top rail, please consider a larger pool size. This cover should be able to comfortably float on the pool water without excessive stress. This cover is not meant to be used as a debris cover during the swimming season. This winter pool cover is intended to be used during the off-season. This cover is meant for traditional above ground pools with a traditional top rail. Includes a winch and cable that should be used to secure your pool cover through the grommets around the perimeter of the pool cover. For extra securing, cover clips and cover wrap (both sold separately) are suggested for pool closing. No other method of installation is recommended. Includes a eight year warranty.

Size: 24' (Round)


Color: Blue


Material: Polyethylene (PE)


Brand: Robelle


Style: 3-ft. Overlap


Brand Name: Robelle


Model Name: Economy


Model Number: 4621A


UPC: 034261075446


Manufacturer Part Number: 4621A


Item Type Name: Pool Cover for Above Ground Pools


Manufacturer: Robelle


Installation Type: Floating


Color: Blue


Product Style: 3-ft. Overlap


Shape: Round


Pattern: 21-ft. Pool


Size: 24' (Round)


Item Weight: 9.5 Pounds


Material Type: Polyethylene (PE)


Additional Features: Tear Resistant, UV Resistant, Wear Resistant, Windproof


Closure Type: Buckle


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 23

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good pool cover.
Style: 4-ft. Overlap Pattern Name: 24-ft. Pool
Good pool cover.
Reviewed in the United States on March 16, 2026 by Deborah Kennedy

  • Works Fine For The Price
Style: 3-ft. Overlap Pattern Name: 28-ft. Pool
Works well. I always buy the cheapest cover and buy one each end of season. Theyre gonna tip and be nasty anyway no matter what. Rand or mill. I used the cheap cable and winch along with a gallon chlorine bottle filled with water ties to each eyelet this year. The plastic wrap experiment last season Was a fail. It’s been on a month now and the eyelids are tearing away. I pretty much expected this though. I will start re-tying to eyelet and cable soon and o think that will do the trick. ... show more
Reviewed in the United States on October 22, 2019 by David Scott

  • Perfect
Style: 4-ft. Overlap Pattern Name: 12-ft. Pool
Fits fine (big) for my pool, is been raining this past days, my pool is cover, the rain weight hasn't tore the cover, very resistent
Reviewed in the United States on September 6, 2024 by elizastaroth

  • Pool Cover
Style: 4-ft. Overlap Pattern Name: 15-ft. Pool
Durable and works to keep our pool clean during the winter months!
Reviewed in the United States on March 19, 2026 by Stacey Poole

  • Awful quality
Style: 4-ft. Overlap Pattern Name: 18-ft. Pool
This pool cover is extremely poor quality. I purchased it in August 2025 and installed it on my pool. In February of 2026 the cover had already developed areas that were shredding like from sun degradation. See the attached picture. Of course I am not going to try to get it replaced under warranty because of the terribly difficult warranty requirements. I strongly caution against buying this brand. ... show more
Reviewed in the United States on February 28, 2026 by Monty

  • Held up in Oklahoma for a year! I think it's a good price.
Style: 4-ft. Overlap Pattern Name: 18-ft. Pool
I chose this cover last year because it was the most affordable and I read a good review from someone in my state lol it held up so well through OKLAHOMA winter. Through the summer we put it on & take it off. Depends on the winds & rain. It's a tarp with grommets. It comes with coated wire & a ratchet. I bought it for a second time. We will use the one we got a year ago through summer. We're trying not to use the new tarp until we need to. It was the coated wire that failed us first. I was going to get new coated wire, I think it was cheaper to get a new cover. ... show more
Reviewed in the United States on June 21, 2025 by Mandy Prather

  • Perfect for one Buffalo winter
Style: 4-ft. Overlap Pattern Name: 18-ft. Pool
Good cover for Buffalo winters. With proper water and leaf removal, it holds up well. Then in the spring? I pull it off and throw it out. Cleanest pool in my neighborhood. Buy one every year.
Reviewed in the United States on July 11, 2025 by Goose184

  • Lasted 1 season
Style: 4-ft. Overlap Pattern Name: 18-ft. Pool
Ripped after one mild winter.
Reviewed in the United States on June 16, 2025 by JP

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...