Watkins Manufacturing, operating as Watkins Wellness, is the world's largest manufacturer of hot tubs and portable spas. The company designs and produces hot tubs, cold plunges, swim spas, saunas, and aquatic fitness equipment sold under brands including Hot Spring Spas, Limelight, Hot Spot, Caldera, Freeflow, and Endless Pools. Products are distributed through an independent dealer network spanning all 50 U.S. states and more than 70 countries worldwide.