Adonis, Bath time has never been more natural and pleasant than this, Colston’s Adonis luxury bathtub will remind you of that. Waterfall series that works on both the body and the mind to relax and soothe, Adonis is the newest addition to Colston’s Wellness line. The greatest in technological features and components. Adonis is the finest in its category of luxury bathtubs on the market because of its waterfall technology combined with a configurable digital control panel.