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M Series hot tubs by Bullfrog Spas combine intuitive functionality, gorgeous aesthetics, and the most versatile layouts ever seen in portable spas, together with Bullfrog Spas’ legendary JetPak Therapy System, to create the most elite spa experience available today. Step up to M Series to enjoy JetPaks in all premium seat locations, Simplicity™ water care, multi-functional controls throughout the spa, smart sensor technology, and layouts designed to be enjoyed in a variety of positions by people of various sizes and body types. And yet, all of this functionality is almost forgotten when viewing the M Series’ incredible design concept that enhances the appeal of your home and backyard. .