Surface Markerproduces affordable high quality and user friendly diver safety accessories. With 20 years of experience in the dive industry we at Surface Marker well understand the need for suitable diving related safety products. Surface Marker will be launching a range of diver signal tubes / safety sausages shortly to cover all types of divers and water sports enthusiasts, from snorkelers to tech divers. The key focus by Surface Marker’s is on the Diver Signal Tube with WDS TM . This product is revolutionary in its simplicity of use, affordability with quality you can depend on.