Wirecutter

This pro-recommended ball tied for the sturdiest seat and retained air the best of everything we tested, and comes in sizes suitable for people 4′8″ to 6′5″ and even taller.

Consumer Reports

The TheraBand Pro Series CSP Exercise Ball reigns supreme as the best overall option in our test. If you want a strong, long-lasting, and high-quality ball like what you'd find at your gym or physiotherapist's office, this is the one to purchase. We love its taut, supportive feel whether using it to stretch, do core workouts, or simply sit at the computer. It also blends the perfect balance of sticky grip with easy sliding slipperiness that simply isn't found on many competitors. Perhaps most of all, we appreciate the thicker walls and superior durability &#40;provided you treat it correctly, of course&#41;, something that seems to be lacking these days among many other competitors.  
While this was undoubtedly the highest overall quality exercise ball we tested, we do have a few gripes. Inflation time takes significantly longer than other balls. According to the instructions, you must lay the ball out a few hours, then inflate it 50% and leave it for 24 hours, before finally inflating it to its full diameter. Impatient folks need not apply. It also doesn't include its own pump, and the bike pump attachment didn't fit our pump well and kept falling off. Finally, you don't have your choice of colors, as each respective size has a fixed color associated with it. Still, these caveats aside, we think this product offers a great value, and it was our favorite overall model.

amazon.com

walmart

yotpo

Supportive for sitting and checking your posture during long sessions at the computer, the Galsports Anti-Burst Yoga Ball is great for quick stretching and mobility exercises that add more movement to your day. It inflates easily in about ten minutes thanks to the included foot pump, which also can be used for deflation when you need to store the ball. We tested some exercise balls made from thicker material, but we didn't encounter any durability issues with this one. For the price, we feel this is a great deal for someone who wants to add a few wellness-related habits to their routine.
While we appreciate the included pump, we are a bit concerned that the pump and tubing are too delicate to withstand many inflations. In addition, this ball's texture feels a bit too slippery for serious, sweaty, high-energy exercise. But for the casual user, the Galsports Anti-Burst Yoga Ball hits the mark.  

OutdoorGearLab

Supportive for sitting and checking your posture during long sessions at the computer, the GalSports Anti-Burst Yoga Ball is great for quick stretching and mobility exercises that add more movement to your day. It inflates easily in about ten minutes thanks to the included foot pump, which also can be used for deflation when you need to store the ball. We tested some exercise balls made from thicker material, but we didn't encounter any durability issues with this one. For the price, we feel this is a great deal for someone who wants to add a few wellness-related habits to their routine.
While we appreciate the included pump, we are a bit concerned that the pump and tubing are too delicate to withstand many inflations. In addition, this ball's texture feels a bit too slippery for serious, sweaty, high-energy exercise. But for the casual user, the Galsports Anti-Burst Yoga Ball hits the mark.  

Exercise Ball Comparison