Fast Set Pool Set has water capacity (80%) of 5,377 L (1,421 gal.). The extra strong side walls of this pool are constructed with Tritechi, a 3 layer reinforced material with a polyester mesh core encased between two layers of high gauge PVC material. This creates a total thickness of 0.40-0.80mm (16-32 gauge) depending on the size of the pool, offering superior strength and durability.