Kohler Bathtubs provide unparalleled immersion experiences with five distinct technologies – VibrAcoustic adapts the science of sound therapy. KOHLER whirlpools deliver powerful directed massage. BubbleMassage delivers thousands of bubbles that support and massage the body. Effervescence delivers a combination of water and air. Kohler has a large selection of whirlpool tubs to revitalize you. Featuring the RiverBath and Sok models. The Sok bath is an ultra-deep bath with chromatherapy. Kohler baths come in a huge range of sizes, shapes, materials and colors to complement any bathing environment. Kohler: The way bathing was meant to be.