TheraBand Exercise Ball, Professional Series Stability Ball with 55 cm Diameter for Athletes 5'1" to 5'6" Tall, Slow Deflate Fitness Ball for Improved Posture, Balance, Yoga, Pilates, Core, Red : Amazon.ca: Sports
Pro Grip Fitness Ball (55cm) | Sporting Life Online
Ultimate Fitness Stability Ball – Spartan Fitness
Physiotherapy Room Elite Series 55cm Exercise Ball | Physio Store
Anti Burst Exercise Ball – Fitness Avenue
Gym Ball 55cm | Yoga Ball | Exercise Ball | Strauss Anti Burst Ball | Aair Medicals | Pakistan Largest Medical Online Store
Everlast FIT Pro Grip Fitness Balls - 65cm - Burst-Resistant, Anti-Slip, Pump Included, Great for Balance, Home Workouts, Yoga. (Available in 55cm, 65cm and 75cm) (Red, 65cm) : Amazon.ca: Sports & Outdoors