Strong enough to support your entire family, yet light enough to set or remove in five minutes or less, these premium Blue Wave pool covers are made of super strong 2-ply mesh with a break strength of over 4,000 lbs. During use, the pool cover is held in place with brass anchors that then recess flush with your pool deck when the cover is not in use. In addition to its great safety features, Blue Wave safety covers afford excellent winter protection for your pool - the fine, lightweight mesh allows rain to seep through, but screens out leaves and debris. The cover comes complete with brass anchors, stainless-steel springs, an installation tool and storage bag. Backed by a 12-year warranty.