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11 FOOTBALL BALLS

KIPSTA Hybrid Size 5 Football F550 - Red

KIPSTA
4.5/5

Colour : Fluo blood orange

Decathlon
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We designed this ball for footballers looking for an excellent balance between durability, comfort, and game experience. Our design teams made the F550 ball with a thicker outer material to increase the ball's lifespan.The 24-panel design also improves stability.

Technical Information

Stable trajectory

We know that a stable trajectory is very important, particularly for long games or when playing as a goalkeeper. We've changed the construction of the outer cover to improve stability. Traditionally designed using 32 panels, we've designed the F550 using 24 identical panels. This improves the stability of the ball and makes it more comfortable to play with.

Weight

Between 420 and 445 cm (Size 5)
Between 350 and 390 cm (Size 4)

Circumference

Between 68.5 and 69.5 cm (Size 5)
Between 63.5 and 66 cm (Size 4)

Sphericity

Average measured variation: maximum 1.5%.
We measure the football's sphericity at 16 different points and examine the recorded discrepancies.
If the discrepancy is greater than 1.5% (FIFA PRO Standard), our engineers are tasked with improving the sphericity to ensure a consistent bounce.

Minimal loss of pressure

We inflate the ball to the recommended pressure (meaning 0.8 bar).
72 hours later, the ball must not lose more than 15% of its pressure, meaning approx. 0.1 bar. The pressure after 72 hours must, therefore, be at approx. 0.7 bar.
This also means that it is quite normal for a ball to lose pressure after a few days.

Water absorption

We simulate rainy playing conditions in a lab, leaving the ball to sit in 2 cm of water on a pivoting support whilst subjecting it to 250 compressions.
By the end of the test, the ball must not have absorbed more than 15% of its weight, or approx. 60 g for this F500 in size 5.

Bounce

Between 135 and 155cm with a maximum difference of 10cm between the ball's highest and lowest bounce. Each ball is dropped 10 times on a steel plate from a height of 2 metres.

Shape and pressure retention

The most stringent test we put this ball through is the shooting machine test.
Withstands up to 2500 shots against an inclined concrete surface at 50 km/h at a distance of 2.5 m.
At the end of the test, we check:
- the ball's general state: stitching must withstand this test
- the circumference: it must not have increased by more than 1.5 cm
- the sphericity: it must not have varied by over 1.5%
- the pressure: the ball's loss of pressure must not exceed 0.1 bar

Design

Our design team watched football players in action on the pitch to develop this Hybrid ball.
This ball is a hybrid due to a concept that combines the comfort of machine sewing with the durability of hand sewing.
We also used a bladder with thread winding (2 km of thread is wrapped around the bladder) to ensure lasting inflation and better sphericity.

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Composition / advice

Composition
Outer shell
100.00% Polyurethane (PU)
Bladder
70.00% Rubber - Natural Rubber (NR) - Latex, 30.00% Rubber - Isobutylene Isoprene Rubber (IIR) - Butyl
Inner fabric
100.00% Polyester (PES)

Our commitments

Test Product Tested in use by a group of 20 intermediate players. The results of the new panel design were very promising. The trajectory of the ball was more stable compared to a 32-panel ball. In addition, the F550 ball meets all FIFA requirements and can therefore be used in competition.
Guarantee : 2 Years

Product benefits

Durability Panel stitching is on the inside, subsequently less subject to wearing
Lasting air retention Guaranteed to keep ball pressure for longer thanks to its Butyl / latex bladder.
Precision Bladder wrapped in a thread to maintain its shape and ensure greater accuracy
Bounce Consistent rebound thanks to the quality of bladder and outer cover
ball touch Extra feel thanks to 1.4 mm polyurethane outer cover.
Stability Designed using 24 panels for a more stable trajectory.

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