Solar Sun Rings are a passive solar swimming pool heating device made from 2 sheets of heavyweight U.V resistant vinyl.
The upper clear layer holds insulating air and focuses sunlight on the blue lower layer. The blue lower layer absorbs 50% of the sunlight and converts it to heat. The balance of the sunlight is allowed to pass through for deep water heating. 
At night the contained air acts as an insulating blanket to retain heat gained during daylight. Solar Sun Rings are equipped with six magnets to improve clarity and decrease hardness of the water in your pool. The magnets are positioned to facilitate rafting. The strength of the magnets will permit single position removal but will easily separate to prevent entrapment in accidental falls.

They are safe to use with children around as they separate to prevent entangling and entrapment.

Remember: 70 to 80% surface coverage is all that is needed for efficient thermal heating and retention here in the United Kingdom. 

On orders of 10+ a discount will be applied at the checkout. (excludes international deliveries)

One ring is 5ft in diameter. 

For more information please visit:
http://www.solarsunrings.com

Ring Calculator:
http://www.solarsunrings.com/products.html

If you require the Anchored Version, please click 'HERE'