It all starts with a fiberglass shell. At Apollo, we only use fiberglass tub shells. It allows for the highest quality and strength. The Apollo tubs are designed to support many daily and weekly baths over many years. Apollo tubs are made to last under heavy demands. Every shell goes through a quality inspection before it is approved for production. Not only is the shell tested for strength, but we also inspect the gel coat to ensure a class 1 finish.