The pool walls are constructed with DuraPlus, a reinforced material with a polyester core and two layers of high-gauge PVC for superior strength and durability FrameLink System - custom metal T-connections prevent metal corrosion Realistic prismatic lithography provides the pool with a beautiful print that adds texture and a rich blue color to the interior lining for ease of 20 Precise setup Easy to disassemble when preparing for off-season storage Heavy-duty numbered sidewalls and 3-print sidewalls provide extra support The rounded shape means easier installation, enhanced stability and less wasted space. 3-Year Sidewall Sidewalls Built-in flow control drain valve connects to a garden hose (with included adapter) to easily drain water Water capacity (90%): 6,473 liters (1,710 gal). Underwater Adhesive Repair Patch Pool is equipped with fittings for compatibility with overflow filter pumps Contents: One pool, filter pump (#58381za), Type I cartridge compatible (#58093) Bestway Steel Pro Max pools offer a high quality option at a reasonable price compared to in-ground pools Others on the market. Mosaic liners provide an attractive look and nostalgic pool feel. Assembly is a breeze, and pool owners can easily connect the frame pieces until they hear a click. Families can enjoy Steel Pro Max pools for many seasons to come, due to the durable, puncture-resistant Duraplus lining and corrosion-resistant steel frame. High-quality Steel Pro Max assembles affordably with design touches that many will love.