【Pay attention to choose the right size】QH.HOME 18ft pool cover is designed for 18ft metal frame pool by default, if you have an 18ft steel wall pool please choose 21ft metal frame pool (the reason is that the width of the outer edge of the steel wall round pool is increased by 6-10 inches, and the required size is larger, please refer to the size comparison chart)

【Exclusive Patented Triple Windproof Design】 double insurance reinforcement of ratchet rope system + segmented drawstring, adjustable tension segment by segment, fits perfectly to the curvature of round pool edges, and with the pool cover edge load-bearing hanging loop (for hanging sandbags/heavy objects), it can withstand strong winds of more than 100 miles per hour.

【Upgraded Tear Resistant Design】The edges of our round pool cover are designed with a lay-flat seamless design (no risk of edge cracking compared to traditional double stitching). Upgraded 500D Oxford fabric has a tear strength of 330 lbs (lab test), which increases the durability by 3 times, far more than 420D/210D fabrics, ensuring the pool cover is stable for long-term use.

【Always Keep Pool Water Clean】 This pool cover is made of upgraded 500D high quality waterproof material, with waterproof sealing strips on all the top seams, which effectively blocks rainwater from seeping in and pool water from overflowing, keeps dirt and leaves away from the water, makes the pool water cleaner, reduces the number of times you need to clean and the use of chemicals, lowers the cost of maintenance, and saves you money and effort.

【UV Protection&Insulation】 PU-coated 500D fabric blocks 99% of UV rays (UPF50+ certified), protecting the pool water and cover from sun damage and preventing algae growth. Black fabric absorbs heat to raise water temperature by 8-12 degrees Fahrenheit during the day while reducing nighttime heat loss by 95% - dual-mode climate control that outperforms silver-coated pool covers.

【Safer & Eco-Friendly Material】Our pool cover is certified by Amazon “Climate Friendly”, made of odorless and environmentally friendly PU transparent material, which is safe to use even in hot environments, won't melt or leave black residue, and is safer and more environmentally friendly than silver coated material. Let you and your family enjoy the whole summer.