Mini Exercise Ball for Yoga, Pilates, Barre, Fitness-Stability Ball Accessories for strengthening core Exercise

I ordered 2 of these a couple of months apart (I actually just ordered a 3rd after damaging one) to use for a craft project. I can't imagine most people would care about precise size, but they aren't 12" in diameter when fully inflated; mine are 11" and 13+". Fortunately, firmness isn't a big deal for my project (even if a consistent size is) so I can just inflate them different degrees to get the same size.

I use this as my Silver Sneakers ball, and it is perfect. Blowing it up takes a little practice, but success will come. Just hang in there. Feel and bounce are great.

Got this for my mother to exercise at home between therapy sessions. She said it's the Perfect size. And it feels like it will last a long time.

I wrote a review a few days ago regarding the actual size (circumference) of the 12 inch orange Hola/Hatha ball. After two days of being filled I attempted to add more air and the ball had softened considerably and filled to a 38 inch circumference. It turned out to be what in fact I was hoping for, and I apologize to the company for writing my previous review in haste. It is a good product!Steve M

Takes some effort to pull out the plug and some dexterity to reinsert it without losing too much air.

Love the color, size and Great price. Ball loses air quickly with cold room temperature change.

Great price. Perfect size for Barre. Good quality

Perfect size, perfect pressure (not too much), perfect for me as I learn Egoscue for my back.