45-55 cm Anti-Burst Yoga Balance Ball – Yoga Accessories
Gaiam Total Balance Ball 55 cm Yellow - Walmart.com
Amazon.com: 55cm, Yellow Smart Self-Guided Stability Ball – Exercise Ball for Exercise, Yoga, Pilates, Office Ball Chair and More, 13 Exercises Printed on Ball for Easy Reference, Prism Fitness : Sports &
Yoga Ball - By BODYSPORT (Yellow 65 cm) Great for Pilates Exercise Fitness Balls or Small Desk Chair - FREE Pump & Exercise Guide Included - Walmart.com