Pool covers are available in many different sizes and styles to suit every type of pool. However, if you can't find one to fit your pool, one can be ordered custom-made online. Pool covers come in three basic styles basic safety covers to protect children and animals from falling in; winter covers when the pool isn't in use during winter and solar covers that retain the pool's heat. Pool covers are also available in manual, automatic and electric models. Manual covers are put on by hand and suction keeps them attached; automatic pool covers unroll at the push of a button; while electric pool covers have remote control capabilities. Depending on size and if they are manual or motorized, pool covers can range from $20 to $2,000 online.