The corrosion-resistant steel frame is sturdy and durable to offer your family fun all summer long. The DuraPlus™ liner is made of durable material that is reinforced for strength and puncture-resistance. Additional Features: this above ground pool set also comes stocked with a filter pump to keep the pool water looking crystal clear. Plus, this pool is very simple to set up and to take down for off-season storage. No tools are required, and a hose connects to the built-in flow control valve to quickly and easily drain away pool water.