The Bestway® Power Steel™ Swim Vista Series™ II is the second generation of the first ever pool with built-in portholes! Back and better than ever, the Swim Vista Series offers a truly unique pool experience. Swim Vista Portholes: With reinforced, fortified portholes built into the sides of the pool, swimmers can wave and make silly faces as they paddle by. These windows also allow parents to easily keep an eye on the kids as they dip and dive underwater. Plus, minimal-tool setup makes this pool a no-brainer. Durable Construction: The corrosion-resistant steel frame is equipped with our Seal & Lock System™ for a sturdy and secure frame connection. The protective connectors protect from damage and rust-causing metal-on-metal contact. The durable steel legs have 17.5% more bending resistance than similar sized competitor pools. 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 above ground pool set also comes stocked with a filter pump, a ladder, a pool cover and a ChemConnect™ chemical dispenser. The ChemConnect dispenser maintains clean, healthy pool water by providing a stable level of chlorine that is evenly dispersed throughout the pool.