A pool blanket is a cover designed to float on the surface of a swimming pool. It helps to retain heat, keeping the water warm and reducing evaporation. Pool blankets are typically made from materials like polyethylene or vinyl, which are durable and resistant to UV rays. They can also help keep debris out of the pool, making maintenance easier. There are different types of pool blankets, including solar blankets and winter covers. Solar blankets are used during warmer months to harness sunlight and warm the water, while winter covers protect the pool during colder months. Using a pool blanket can enhance the swimming experience and save on heating costs.