These balls are really cool and reasonably priced. However, 2 of the 3 we ordered popped with very little use. They are popping where the plug is glued into the ball. I will also note that 1 of the 3 did not have the same rate of rise as the others, and I think it was slower than the other two. They were not really slow rise per se. We will see how long the last one lasts.

Unfortunately, it only lasted for 2 weeks. It was not perforated by students, but the plug in the ball let go.

Really helpful but they pop easily :( #sweepstakes

So cool. Wish you could pick color.

Love this product for my fidgety students.

Great product! My students love these so much!

I ordered this for my kiddo. What came was expected. It arrived quickly but after one day of play it popped and leaked. Maybe we just got a defective one.

With the closure of schools, I have been using these as a fidget during videos meetings/trainings. I can't wait to share them with students. They are very relaxing.