Goby WE000004 Pressure Side Pool Cleaner with Back-Up Valve 31' Hose, 3 Jets, Gray/White is designed to blend with light-bottom pools. Goby features an all-wheel belt drive mechanism for greater vacuum power and faster cleaning. Powered by three Venturi jets, GOBY sweeps, scrubs. This pressure side pool cleaner vacuums the floor; walls; and steps of the pool and holds debris in its single chamber filter bag. GOBY removes debris before it reaches the pump basket or filter; prolonging filtration system life. The GOBY works in all inground pools and requires a booster pump. Parts are in stock and available everywhere.