Kohler Co. has enhanced several of its baths by adding BubbleMassage technology. The cast iron baths—including Tea for Two, IronWorks, Kathryn and Memoirs—have 40 to 44 staggered airjets along the lower perimeter. The blower/motor delivers heated air and offers a variable-speed control for a bubbling massage in 18 levels of intensity. The low-profile airjet design allows for easy cleaning. For added durability, the cast iron is coated with a layer of enamel.