By Nicole Rogers

Many studios use small balls for myriad reasons. So when I first saw a coworker using the TRIADBALL™, I thought, “Oh, what a nice sturdy ball!” I had no idea how much I would come to love this little purple ball specifically. And now, its creators—Michael Fritzke and Ton Voogt, Pilates teachers who were trainers for Romana Kryzanowska for over a decade—have released a new 180-page Triadball Manual to help trainers incorporate it into their sessions.