APEXUP Yoga Ball Exercise Ball Anti Slip Heavy Duty for Fitness, Balance & Core Workout, Balance Training, Pregnancy & Physical Therapy, 5 Sizes

Customers find the yoga ball to be of good quality, easy to use, and effective for various activities including physical therapy and chair exercises. The size receives mixed feedback, with some finding it perfect while others say it's too small. The durability and air retention are also mixed aspects - while some say it lasts long and holds air well, others report it popping after 4 months or not staying fully inflated. The included pump receives mixed reviews, with some finding it helpful while others say it's not great.