GalSports Exercise Ball Yoga Ball for Home Gym, Stability Ball for Workout & Fitness, Balance Ball Chair for Office, Swiss Ball for Physical Therapy Turkis S (38-45cm)
Fabulous Five stability ball exercises – Human Kinetics
Fitness Mad Exer-Soft Stability Ball, Soft Pilates Ball, 3 Sizes: 7”, 9” & 12”, Mini Gym Ball for Pilates, Yoga, Core Training and Physical Therapy (7", Blue), Exercise Balls & Accessories - Amazon Canada
Amazon.com: CIZEBO 4 inch Therapy Ball for Release Hip Flexors, Pain Relief for Lower Back Thigh Muscles, Small Exercise Ball for Physical Therapy, Blue : Sports & Outdoors