Pure Fitness 55-cm Stability Exercise Ball at Lowes.com
Relaxus Blue Anti-Burst Exercise Ball (55-65cm) – Aspen Healthcare
Fitness Ball 55cm. – TKO Strength & Performance
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
Swiss Ball Size 1 (55 cm) - Blue - Deep petrol blue, Dark petrol blue, Ice blue - Domyos - Decathlon
Exercise Ball 55-65cm with Extra Mini Swiss Ball 25cm, Gym Ball with Quick Foot Pump, Birthing Ball Anti-Burst & Extra Thick for Yoga, Pilates, Fitness,Pink : Amazon.ca: Sports & Outdoors