TheraBand Exercise Ball, Stability Ball with 55 cm Diameter for Athletes 5'1" to 5'6" Tall, Standard Fitness Ball for Posture, Balance, Yoga, Pilates, Core, & Rehab, Red : Amazon.ca: Sports & Outdoors
CanDo CanDo Inflatable Ball 95-cm Pilates Exercise Ball in the Exercise Balls department at Lowes.com