I use Gymnic ball in my gym in NY. They are nice and bouncy also 65 cm size. I was very happy to use them and ordered them for use at home. But the one in gym seems to be much bigger for the same air pressure. The new ball seems to be much smaller than expected maybe 45 cm. I do not know why. I give it a 3 star because of this
Rating:
[3 of 5 Stars!]