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Rated 15/09/2026, variant Stormred Gymnastics ball 85cm, black
Verified purchase
After only a few days of use, the ball suddenly burst right under me while I was simply sitting at the computer. It wasn't overinflated, I wasn't exercising on it, and I didn't put any excessive strain on it. I weigh 103kg, while the manufacturer states a load capacity of up to 130kg. When it burst, I fell to the ground and really hurt my back, which is still painful. This isn't just a poor-quality product, but in my opinion, it's also a dangerous item that poses a real risk of injury. When I subsequently read other reviews, I found out I'm not the only one whose ball has burst. I definitely do not recommend it.
After a few days of normal use, it suddenly cracked.
Even after several days, it still has a strong plastic/chemical smell.
Couldn't even hold 103kg, even though the manufacturer states a load capacity of 130kg
After about 3 weeks of use, a crack appeared in the seam. And two more started to appear a bit further down.
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Martin, Dačice
Rated 01/08/2026, variant Stormred Gymnastics ball 85cm, black
Verified purchase - review from a price comparison website
pump included in the package
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Anonymous customer
Rated 31/07/2026, variant Stormred Gymnastics ball 75cm, black
Verified purchase
price
does not match size
The 75cm diameter is only 57cm
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Reply from Alza
20/08/2026
Hello, we have tested the product and when correctly inflated to its full size, the diameter corresponds to the stated 75cm. If it reaches a smaller diameter, the ball is insufficiently inflated.
It would be nice if you sold what's on the box and in the description
price
pump in the package
The size is completely wrong.
The diameter is only 57 cm, not 75 cm
the diameter is only 61 cm, not 85 cm
I have to return
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Reply from Alza
20/08/2026
Hello, we're sorry to hear about your bad experience. We have tested the products and when correctly inflated to full size, the diameter corresponds to the stated 75 or 85cm.
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