Myga Yoga Stool for Headstand - Multifunctional Yoga Sports Inversion Chair Bench for Head-Stand - Yoga Aids Headstander Exercise Body-Lift Prop Ideal for Workouts, Fitness, Gym and Stress Relief. INVERSION CHAIR - The Myga Yoga Stool can be used as an inversion chair to safely build up your core strength and perfect your yoga form and stability.