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
Yoga Ball 55cm Chair Anti-Burst Heavy Duty Stability Ball Birthing Ball with Quick Pump - China Gym and Yoga Ball price | Made-in-China.com