HyPerLite solid safety covers have made a good thing even better. 30% lighter than a standard solid cover, HyPerLite covers will save a lot of effort in putting your solid cover on and off. HyPerLite covers also block 100% of UV rays, thus all but assuring you that your pool will have no algae growth. All HyPerLite covers come with a pump that must remain on top of the cover all Winter in order to prevent displacement of your pool water. HyPerLite Solid safety covers are available in tan, blue and green.