You need a lot of them to get significant coverage if you have a normal to above normal sized pool. This makes them a pretty expensive option. If you have a custom shaped pool, they are probably a better option as opposed to a cover that gets pretty heavy and awkward to remove. Overall - they do a very good job of heating and preventing evaporation (this is why I bought them, and hence 5 stars for that). A few notes (and the reason i have them one less star). Often, when you go to remove them, you will find that many don't hold half to all of their air when you take them out of the pool. So i have to re-inflate about 3-4 of the 20 of them to keep them inflated. 2nd - do NOT leave them in the direct sun when they are out of the pool. They get very hot and the plastic almost feels like it will melt. Rinse them off (if possible) - I have heard that the chlorine can fade/wear on them if it dries on them out of the pool.Read full review
Verified purchase: Yes | Condition: New
I purchased 6 of these for an above ground round pool. It's very difficult to judge how effective they are. The pool did get warmer recently however the weather has been warmer and the nights have not been as cool. When I first installed them and we had a few cooler nights the water still seemed too cool. Without having a side by side test comparison of a pool with and without them it is very difficult to judge how effective they are. I would say that they may help but don't expect miracles.
Verified purchase: Yes | Condition: New
Instead of purchasing another 24' round solar cover, we decided to try the solar sun rings. Pros: solar rings are easy to remove and install from in or out of pool. No bulky solar reel required. No modifications/mounts required on top rail. Easy to fold and stack on deck. Note: keep out of direct sunlight. Cons: Pricey compared to a single solar cover.. Purchased the 12 pack or rings as recommended for 24' round pool, but can actually use 16-17 rings. Again pricey. We also use the solar fish to act as a liquid solar cover. Verdict still out on durability and heating of rings as this is our first season.
Verified purchase: Yes | Condition: New
1 out of 9 rings has a hole in the inner portion that is used to absorb the sunlight. I patched it and the patches are of lame quality. The manufacturing of this part could be a lot better with no air needed. Just make bubbles like a real solar cover!
Verified purchase: Yes | Condition: New
My experience is that 15-20 % of the rings upon delivery are not air tight either in the central or outer ring compartments. Some vendors have replaced the dedfecitive ones at no charge, others do not. My sense is the QC in the manufacturer is not good. They are effective In reducing evaporation and maintaining water temp. But are fragile.
Verified purchase: Yes | Condition: New
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