WUNDACORE RESISTANCE RING - BLACKThe WundaCore Resistance Ring is a patented, fully redesigned exercise ring. It's strong but flexible, with curves exactly where you need them to create core connection in all bodies, all exercises, all of the time. Get A Deep Core Workout Activate your core with our exercise ring. Its intuitive curves and strong tension load let you know where to grip and how while you do squats, dips, lifts, curls, and twists. Bring Local Muscles To Life Discover