Like a rolling stone

The decision to buy this gymnastics Balls came after I read a review from another manufacturer that only the Sissel-Securemax exercise balls would withstand the highest loads. Weights beyond the 120kg had no problem.
Well that may be true. I myself weigh about 90kg, but wanted to make sure when choosing my future seating furniture in number. Finally, I do not rule out to complete even one or the other physical exercise on the ball.
What stood out immediately when unpacking the ball, was the crude material. Made without plasticizers, the ball is about the flexbility a tractor tire and also about the same weight. A bending apart for inflation is hardly possible, unless you're one of those sort of people who can tear even phonebooks.
Then it said: pumping! Since I am not in possession of a compressor of a double action, let alone, there was only the good old muscle power! Of this I fortunately enough. The abbreviation, blow up the ball with pure lung power, does not work when Sissel-Securemax simply, but the material is too hard.
After the ball had reached the desired size in about (! 75 cm circumference are not, rather 60), came the next disillusionment: The Sissel-Securemax more visually the impression of a stone (certainly favored by the color) and also moves like this. From ease no trace! He is simply there like a marble made of solid marble and quasi not rolling. This may suffice for use as pure seating or exhibit. However, when the ball will roll to the side, or hiding under the desk every now and then, it is necessary to pick it up and carry. And this can not be the sense of a "ball" in my eyes. Especially since he is no lightweight even when inflated.
Last but not least: it sits is not it especially convenient. Due to its hard surface, he is little by little and is flexible. At the same time he actually not misled into believing that he would ever burst due to this robustness. Presumably it could also easily balance elephants.

In short, at the Sissel-Securemax is a very durable product that is likely to be intended for people above 100 kg Brand. Those looking for a lightweight, flexible gymnastics product has hereto probably no joy.
2 stars because it did not meet my expectations, but was heavy and uncomfortable. But very solid. Solid as a rock!