【Size】 Round protective pool cover is suitable for a pool with a diameter of 10ft/Ø 305cm. You can adjust the size you want as needed; 1.1 kg, solar film with stainless aluminum double eyelets at a distance of 1 m, including tension cord, drain valve and tension ratchet. 【Material】 External protective cover is made of Waterproof PVC and 0.18mm thick vinyl film, stable, tearproof, durable and weatherproof fabric tarpaulin. 【Eco-Friendly Heating】Solar tarpaulin can be rainproof and dust and particular solar film with many air cushions on the lower part noticeably accelerates the heating of the water (resistant to UV and temperatures from - 40°C to + 70°C), and prevents a long-lasting cooling and rapid evaporation. no need for frequent water changes. Extended pool life. 【Easy to Use】 Round pool cover for pool cover easy to use; heavy-duty rope tie, closes tightly to the edge of the pool. Drainage holes prevent water accumulation; Accessory pool cover is soft, easy to put on and foldable. The swimming pool cover can reach the size of A3 paper, easy to carry and store without occupying too much storage space. 【Wide range of uses】 Blue swimming pool cover Ideal for covering and protect wood,cars,motorcycles,boots,swimming pools,etc.it can against moisture,dirt,dust,pollen and bad weather.for such as gardens,camping,balconies,suitable to round pools.