The Intex 18Ft x 9Ft x 52In Ultra XTR Rectangular Frame Swimming Pool Set is perfect for a backyard oasis. With a gray outer liner and blue tile-print inner liner, it has a classic, clean look. The easy maintenance with sand that only needs routine backwashing and replacing every 5 years makes it a breeze to keep your pool looking great all season long. Plus, the quick set up means you'll be ready for water in 60 minutes. The durable frame is made of high-quality, galvanized steel with precision-engineered locking system and encapsulating inner and outer powder coating to prevent rusting. Hydro aeration technology circulates the water for improved filtration and relaxation.