Heavy-Duty Solar Pool Cover The Pool Solar Cover is made of durable material that can withstand long-term sunlight exposure. You don't have to worry about the bubbles coming off due to long-term use. And the pool cover's seam joints are upgraded so they won't crack easily. Any quesiton , please let us know, we will give you solution after check with that！ VINGLI 12Mil Solar Pool Cover Rectangle Solar Blanket Economical & Effective to Retain the Captured Heat and Extend Your Swimming Time The VINGLI Solar Pool Cover will make your swimming time more enjoyable! The solar blanket captures the energy of UV rays during the day and then converts it into heat to heat your pool water for a more comfortable swim! The VINGLI Solar Pool Cover can be used to maximize the convenience of your pool life. Capture solar heat and save the cost of heating. Extend pool water warm time. Ruduce the water evaporation. Reduce pool defoliation at useless time. Suitable for Irregular Shaped Pools The pool bubble cover can be cut to fit the shape of your pool. When you measure your pool, you need to measure the longest and widest length of the pool to determine the size you need. Then put the cover on top of the pool, draw the shape you want on the cover, and use scissors to cut out the box you need. Maintenance advice for the cover We have some suggestions to make the pool cover last longer for your pool: If you are used to placing chemicals in your pool, we recommend you place the solar pool cover after 24H to avoid chemical damage to the bubbles. When you are not going to use it, you can roll it up after washing and drying, so that it will not break easily. Easier to Use If you want to have a more relaxed pool life, we suggest you use it together with the VINGLI's pool cover reel. It will make putting on and taking off the pool covers much easier. Have a great time at the pool!