The rectangular shape maximizes usable swimming area (compared with round pools) by using the full length & width more efficiently.
Strong metal frame: The frame is constructed from steel tubing that is zinc-plated or powder-coated to resist corrosion/rust.
Durable sidewalls: Use a 3-ply laminated material (often brand-named “SuperToughTM”) made of PVC and polyester layers, giving puncture resistance and durability.
Quick and straightforward assembly: Many units claim “ready for water in ~30 to 45 minutes” when setup properly.