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Solar Covers heat your pool in two stages: first by absorbing solar energy to heat the pool, and then by retaining the heat to keep the water warmer longer. The small bubbles on the Solar Cover are filled with air that heats up when the cover is in the sun.
The best way of dealing with your solar pool cover is to put it on a reel. A reel can be manual or electronic. You can get a reel on wheels that can be easily moved out of the way during swim times. Like other kinds of solar pool heating, a solar pool blanket can increase the length of your swim season.