Not sure if they sent me the wrong size, but this product is WAY too small to be used by an adult. I ordered the 55cm Jump Ball, which I was expecting to be the same size as my 55cm medicine ball, however it is approximately half the size. I think they include the handles in the overall size. I am only 5' 5", and this jump ball is way too small to be useful because I am so crouched down when I sit on it that I have no leverage. Total waste of money.
As so many said, takes a bit of time to get it to full size. But...if you fill it with the supplied pump (mine worked perfectly, no complaints!), let it sit for a few hours, put in more air, let it sit and continue to do that it will fill to it's full size within a day or so (you have to let the rubber stretch) and it's as big as they claim! We took our time and did it over two days filling it until it was taut and then letting it sit for hours.
It comes with an excellent wall hanging chart, well illustrated. I'm fairly heavy and it holds my weight well and doesn't feel like it will burst.
It's definitely a good value.
Like most reviewers, I found it uncomfortable at first because one has to find just the right place for your ankles and just the right way to hold them in the slots while it's moving. I folded 2 plush washcloths in half and laid them over the footrest, and that helped a lot, but it still takes some finness to get it where you can totally enjoy the ride. But once you get that sorted out, it is heaven to let it rock you. I find it helpful to relieve stress, and also to invigorate my circulation. I feel so happy just lying on the floor getting tossed gently back and forth. I just wish there was some way to strap the feet in - I'll keep working on that. But even with that drawback, I absolutely recommend this product. It's very sturdy and I'm sure will last a long time; I've had good experiences with Sun Pen's products. Also, this comes with a corded remote, and I really like that too.
This brings back so many memories from childhood, and it's really fun. The only downside is that it didn't come with any instructions as to how much air to pump into it. We were scared it might bust if we filled it too much. I'm only 5'2" and this is just right for me, but it probably wouldn't work so well for someone over 5'6"
I'm extremely pleased with my peanut ball. I do construction, my lower back hurts ALL the time. A few minutes with the ball and my back is loosened up and the pain is gone. Seems very sturdy and definitely a good value. Shipping was fast too.
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