M Series™ spas are available in four elite models at Alpine Pools. Each spa combines 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. 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.