Football Ball F500 Size 5 - Neon Yellow

8576135

KIPSTA

Made for
For this F500 hybrid football, our design teams chose to use a foam inner cover for extra comfort during play and invisible stitching for greater durability.

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Advantage
DurabilityPanel stitching is on the inside, subsequently less subject to wearing
ball touchWe have placed foam panels on the outer cover for your playing comfort.
Lasting air retentionGuaranteed to keep ball pressure for longer thanks to Butyl et Latex bladder.
BounceConsistent rebound thanks to the quality of bladder and outer cover
Warranty2 Years
Technical Information

1
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 stitching 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.
2
Weight
Between 420 and 445g (Size 5)
3
Circumference
Between 68.5 and 69.5g (Size 5)
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.
5
Maximum pressure loss
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.
6
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.
7
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 2 meters in height
8
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
Information / Concept / Technology
Composition
Outcover : 100.0% Polyurethane Foam : 100.0% Ethylene Vinyl Acetate Bladder : 100.0% Rubber - Butadiene Rubber Backing : 100.0% Polyester

Product test
Compliant with international football federations' most stringent standards.
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