We have developed a football that meets the strictest requirements and is FIFA Quality Pro-approved.
This ball is unlike the others in the Kipsta collection for two reasons:
These two criteria influenced our choices in terms of manufacturing process, materials, and the internal and external composition of the ball, such as the bladder and the number of panels.
a ball has to be perfectly spherical to guarantee stable flight through the air.
That's why we have gone with a laminated bladder for this FIFA QUALITY PRO-approved football, with strips of fabric affixed to a butyl/latex bladder.
striving for more, our designers have come up with a 12-panel thermobonded (seamless) construction featuring small grooves for even greater accuracy when shooting from a distance and playing long balls.
This technology also makes the ball even more waterproof in the rain.
When it comes to feel and touch, it's all about that point of contact between ball and boot when you bring it under control, play a pass or shoot on goal. The conditions are also a factor, whether the pitch is dry or wet.
Our teams have thus chosen to use a textured component to ensure better feel and touch (without making it stick to your boot) and give you the best possible ball control.
This exclusive Kipsta ball design is sure to enhance your game.
The F900 has passed a number of laboratory tests to meet the stringent standards expected of a match ball. You'll find details on all the tests below.
The ball underwent six tests to obtain FIFA Quality Pro approval and four additional Decathlon tests at our ball lab:
We weigh the ball on scales to ensure it falls within the specified FIFA Quality Pro weight range: 420-445g.
We measure the sphericity of the ball at 45,000 different points and calculate the difference between each point. The maximum allowed difference is 1.5%. Our engineers' brief is to improve the sphericity to guarantee consistent rebound and roll.
We inflate the ball to the industry standard of 0.8 bar. Over the following 72 hours it must not lose more than 15% of its pressure, around 0.1 bar. The pressure at the end of this 72-hour period should be above 0.7 bar. It is entirely normal for a ball to lose pressure over a few days.
In the lab, we simulate wet conditions by placing the ball in 2cm of water and turning and squeezing it 250 times. To pass the test, the ball should not absorb more than 10% of its weight in water, which is around 40g for the F900. One of the advantages of the thermobonding process is that the ball absorbs less water than it would with other processes, such as machine stitching.
Between 135 and 155cm, with a maximum difference of 10cm between the highest and the lowest bounce. Each ball is dropped ten times onto a steel plate from a height of 2 metres. The rebound of the F900 ball met the FIFA Quality Pro requirements.
In the most demanding of all the tests, the ball was fired 2,500 times against an angled concrete surface at a speed of 50km/h and from a distance of 2.5m. The following are checked after the test:
The ball is compressed between two plates up to 20% of its initial diameter and the force needed to achieve this compression is measured. This tells us how flexible and hard the ball is when inflated to 0.8 bar.
The ball is overinflated by 1 bar and punctured with a sharp instrument. The aim is to measure the force needed to puncture it (the greater the force, the better).
The aim is to simulate the resistance of the ball when it is subjected to extreme temperatures, for example, when it is transported in a container from the factory or in the boot of a car at the height of summer. The ball is placed in an oven for several hours at temperatures in excess of 60°C
The ball is placed on an inclined surface and allowed to run onto a flat surface measuring 1.5 metres in length and featuring a line down the centre. The angle of deviation from this line is then measured. The ball should not deviate more than 5 degrees from its initial rectilinear trajectory. This test allows us to check if the ball is properly balanced.Certain parts of the ball can cause an imbalance, such as the valve.