Easy to set up. Durable PVC and polyester with triple-layer side walls. The built-in drain valve can be connected to a garden hose using the included adapter for easy water drainage. Self-adhesive underwater repair patch. The extra-strong side walls of this pool are made from Tritech, a three-layer reinforced material with a polyester mesh core sandwiched between two high-density PVC layers. This results in a material thickness of 0.40-0.80 mm (16-32 gauge) depending on the size of the pool, ensuring exceptional strength and durability. Steel frame with corrosion-resistant coating, 3-layer base support for additional wall stability. Seal & Lock System steel frame connection system to prevent water ingress into the structure. Mosaic print on the inside of the pool walls and floor. Easy disassembly and space-saving storage at the end of the season. The round shape is particularly easy to set up, offers increased stability, and requires minimal space outside the pool.