Keep debris, leaves and trash from getting into your pool with this overflow pool cover. Above ground pool covers prohibit algae growth and reduce costly replacement chemicals when the pool is in use. This pool cover has drainage holes to prevent water from accumulating on the cover. The pool cover is easy to install, very durable and includes ropes to secure the cover to the pool. Fits Ø12'/3.66M Steel Pro, Ø12'/3.66M Steel, Ø12/3.66M Micro Pools. Size: 3.70 m (12 ft. 1 in.) Drain holes prevent water from accumulating Compatible with above ground pools up to 3.66 m (12 ft.) in diameter Contents: One pool cover Fits 3.66 m (12') steel pools, 3.66 m (12') Professional Steel Swimming Pools and 3.66m (12') Speed Swimming Pools PVC Material Includes ropes to secure the cover