FREE Shipping in the USA This new manifold is the result of many thousands of dollars in engineering, research, and tooling development.  Built with the inspiration and the tradition of the widely famous THERMO Isolation Manifold, the new XS Scuba isolation manifold retains the shape, high luster exterior plating,  and interior design of the THERMO, while offering several design changes that are individually small, but collectively represent a gigantic improvement.