Trideer Exercise Ball for Yoga, Pilates & Fitness - Stability Ball Equipment for Home Gym & Office Chair, Core & Balance Training Accessories, Physical Therapy Equipment, Quick Pump Included, 5 Sizes

< b >Q: Why is my yoga ball smaller than expected?< /b >< br > A: Please refer to the inflation instructions. After the initial inflation, let the ball sit undisturbed for 48 hours, and then inflate i...