The 12' x 30'' / 3.66m x 76cm Fast Set Pool Set by Bestway is a great family swimming pool. It sets up in only a matter of minutes on a flat surface as only the top ring needs to be inflated; the body of the pool has a liner that lifts when you fill the pool with water. It also comes with a flow control drain valve, allowing it to be drained quickly at the end of the season. The Fast Set Pool is constructed of tough Tritech material, making it extremely durable and guarantees to keep the family swimming for years to come! Features :  Easy setup Heavy-duty PVC and polyester 3-ply side walls The liner is supported by an inflatable top ring Select a level surface, inflate the top ring and the pool will rise as it’s filled with water Easy to take down for off-season storage The pool is equipped with fittings for compatibility with Flowclear filter pumps Water capacity (80%): 5,377 L (1,421 gal.) Underwater adhesive repair patch  The extra strong side walls of this pool are constructed with Tritech, 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 Installation : The pool must be set up on a completely flat and level surface. Please do not install the pool if the surface is inclined or sloped.  The selected location has to be capable of uniformly supporting the weight for the entire time the pool is installed, moreover, the location must be flat and must be cleared of all objects and debris including stones and twigs.  We recommend positioning the pool away from any objects children could use to climb into the pool. Position the pool near an adequate drainage system to deal with overflow or discharge the pool. Box Contains : 1 x Fast Set 12' x 30"/3.66m x 76cm Pool Liner Underwater adhesive repair patch Installation and safety instructions