HEAVY DUTY PP MATERIALS: Made of heavy duty pp material, the safety pool cover is durable and long time use even in harsh environment. 4.8 oz/yd² material makes the in ground safety pool cover max weight capacity up to 500 lbs.Remember to measure your pool for an accurate fit before ordering. EXCELLENT STITCHING AND SUN BLOCK : The cover is crafted with double-strapped and triple-stitched details,making it extremely durable for years to come. Sun block rate is about 94% which can keep your water clear. WIDE APPLICATIONS: With outdoor rectangle quality pool safety cover, whether it is to prevent accidental drowning, or to prevent snow or debris, our pool cover can provide excellent safety and convenience. It is suitable for a variety of pool environments, including residential, garden, hotel and engineering projects, providing excellent pool protection. EASY TO INSTALL: All necessary hardware kits and install manual are included in the package including brass anchors, steel springs, Allen wrenches. The drill and tamp style anchoring system ensures a permanent, secure installation. KEEP YOUR POOL CLEAN: Safety pool covers for in ground pools with special woven fabric can efficiently keep out out leaves, snow, and debris, ensuring your pool remains clear for long time and saves your water cost.