Search  for anything...

Smartline Swirl Bottom 21-Foot Round Liner | Overlap Expandable Style | 72-Inch Wall Height | 25 Gauge Virgin Vinyl | Designed for Above-Ground Swimming Pools with Dished Out Middles

  • Based on 118 reviews
Condition: New
Checking for product changes
$349.99 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – 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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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

Eligible for Return, Refund or Replacement within 30 days of receipt

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: Only 8 left in stock, order soon!
Fulfilled by Save More On Pool Supplies

Arrives Dec 1 – Dec 3
Order within 10 hours and 11 minutes
Available payment plans shown during checkout

Size: 21' Round


Color: Swirl Bottom


Features

  • MEASURE TWICE, BUY ONCE Whether installing for the first time, or replacing an existing liner, the Swirl Bottom pattern offers durability while not breaking the bank. Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.
  • NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. Expandable pool liners have been designed to conform to above-ground swimming pools with dished-out middles and wall heights of 72. Will not work with Intex or Pop-Up pools.
  • STAY COOL IN THE POOL Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Swirl Bottom liner.
  • HIGH QUALITY MATERIAL - Swim care-free knowing your liner can tough it out through abrasion, chemicals and UV fading thanks to the use of Lamiclear technology. The layers are made of an acrylic top coat, a UV resistant print layer, and a 100% virgin vinyl base. This material is then welded and cut for a flawless fit and finish. A 25-year limited warranty is included protecting against defects in material and workmanship.

Brand: Smartline


Product Dimensions: 252"L x 252"W x 72"H


Shape: Round


Color: Swirl Bottom


Material: 25 gauge


Brand: Smartline


Product Dimensions: 252"L x 252"W x 72"H


Shape: Round


Color: Swirl Bottom


Material: 25 gauge


Manufacturer: Smartline


Item Weight: 65 pounds


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 1 – Dec 3

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


  • Perfect size and good quality.
Size: 27' Round Color: Sunlight
Had to buy a liner for an regression pool (going from 4ft. Depth to 6ft. Depth). Very pleased with purchase. Good quality product and perfect size. Also decent price.
Reviewed in the United States on August 28, 2023 by ambrosioeny1nq

  • Really nice!
Size: 30' Round Color: Swirl Bottom
So far so good, happy with the purchase and it arrived quickly
Reviewed in the United States on June 21, 2024 by magdalia maikowski

  • Great and lovely product
Size: 24' Round Color: Sunlight
The media could not be loaded. I love the liner. I contracted some guys to do the installation for me. They charge a $1,000 for installing the liner and also fix my filter system. My pool is 6ft deep center, so it’s a little hard to install without wrinkles so I decided to pay for it to be installed and I am glad I did. My children are getting ready for their first swimming lesson. I recommend this liner. 75-80 degrees temperature is best for the installation. ... show more
Reviewed in the United States on April 4, 2023 by PROPHECY

  • Meets expectations
Size: 18 ft Round Color: Sunlight
Value for the money. Easy to install.Shipped as promised. The thickness meets our needs and the water design is very attractive. Above the waterline there was fading of the liner however that does not seem to interfere with the integrity..I’m rating 4.5 stars because of the SLIGHT fading that occurred the first week. ... show more
Reviewed in the United States on August 11, 2021 by Lisa Lewis Lisa Lewis

  • ... installer was skeptical but this was the brand he recommended we buy at the pool supply store
Size: 27' Round Color: Sunlight
The pool installer was skeptical but this was the brand he recommended we buy at the pool supply store. We saved $300 by buying it here vs. at the store and the liner looks great, no problems so far and we're about 45 days into our summer. I had a similar if not the same liner before and it lasted 6 years. It is supposed to last longer but now that I know what I know, I would be a lot more careful cleaning with the brush to not damage the liner. Pick a high quality brush, one with no hard edges that can puncture your liner. And be very careful when cleaning. ... show more
Reviewed in the United States on July 3, 2017 by Brian Crum

  • Leaked right away!
Size: 15' x 30' Oval Color: Sunlight
This pool liner leaked immediately upon installation. We are out the cost of the water to fill it up. Very disappointing.
Reviewed in the United States on June 21, 2024 by Benlipe

  • Great price for a solid liner
Size: 24' Round Color: Sunlight
The liner is a little bit big but that’s on me for ordering the wrong size... It’s been in for almost a month now and I haven’t had any problems. The setup was easy and the liner looks and feels great. The cost is extremely low... half the purchase price quoted by the local pool supply store. Shipping was timely and packaging was good as well. I highly recommend this product to anyone looking for a replacement liner. ... show more
Reviewed in the United States on August 1, 2019 by Danielle K Hastings

  • New liner
Size: 27' Round Color: Swirl Bottom
Perfect for the pool. It was a 54 inch wall. I bought the 72 to have plenty of overlap...
Reviewed in the United States on May 16, 2023 by Kimberly J. Scheidt Kimberly J. Scheidt

Can't find a product?

Find it on Amazon first, then paste the link below.