Turn your backyard into a swimming oasis with the innovative, year-round Bestway APX 365 above ground pool set. Created by industry veterans who are experts in durability, APX 365 pools are built with a combination of long-lasting materials and groundbreaking weather defense technology so you can make memories with your family for years to come! Stays Assembled All Year Long: The first of its kind in the above ground pool market, APX 365 pools are equipped with Polar-Shield weather defense technology. You can set it up for family fun in the summer, then leave it up through the winter - no off-season storage needed! Polar-Shield protects the liner against outdoor elements, even in cold temperatures. Durable Construction: Constructed with corrosion-resistant galvanized steel, this pool is built for longevity. The frame is made from 100% steel, which is then coated in a layer of zinc to prevent rust and damage from the elements. The ClickConnect joints make setting the pool up a breeze, with no additional tools or accessories needed. The frame connectors also prevent metal-on-metal contact to ensure rust-resistance. The sturdy Tritech liner is made out of an ultra-durable 3-layer material that is reinforced for strength and puncture-resistance. Tritech is 15% more tear-resistant, 33% more stretch-resistant and 83% more puncture-resistant than standard PVC, ensuring your pool will last summer after summer. Additional Features: This pool set comes with a sand filter pump, Polysphere pool filtration balls, a galvanized steel ladder and a pool cover. The Polysphere filtration balls are a lightweight, washable and reusable replacement for the sand needed to run the filter pump. Made of recyclable and non-toxic material, these cotton-like filtration balls can last 4-6 months with proper maintenance. The Bestway APX 365 is the pinnacle of pools, delivering peak performance year after year! Size: 18 ft. x 52 in. (5.49 m x 1.32 m) Water Capacity (90%): 6,869 gal. (26,000 L) Tritech enhanced 3-layer liner is reinforced for puncture-resistance, durability and longevity Polar-Shield year-round weather defense allows pool to stay up through all 4 seasons Corrosion-resistant, galvanized steel frame is held together with ClickConnect joints, featuring quick-click connectors Includes a 1,600 gal./hr (6,056 L/h) sand filter pump and Polysphere pool filtration balls (washable, reusable sand filtration replacement) Outer liner with dark marble print and inner liner with blue marble print Easy, no-tool setup and takedown process Contents: 1 pool, 1 sand filter pump, 250 g Polysphere pool filtration balls, 1 galvanized steel ladder, 1 pool cover, 1 repair patch