Bola Sepak Hybrid Football Fifa Basic F500 size 4 White Yellow

8619223 We have designed the FIFA-approved F500 hybrid ball, which pairs comfort with durability, for your training sessions and competitions. Need a ball for your football club? The FIFA Basic F500 ball has an inner foam layer to make it more comfortable to use, along with invisible seams to make it last longer Durability The panels #39; stitching is on the inside so that it won #39;t wear out as fast. Lasting air retention Guaranteed to retain its pressure for longer thanks to its butyl bladder. Stable flight The classic 32-panel design with invisible seams. Bounce Your ball complies with international requirements in terms of bounce Too light? Too heavy? The weight is standardised... This ball weighs between 350 g and 390 g (size 4) and complies with official FIFA standards. FIFA Basic approved. How big is it? What #39;s the circumference? This ball measures between 63.5 cm and 66.0 cm (size 4) and complies with official FIFA standards. FIFA Basic approved. Here #39;s how we test sphericity: Average measured variation: 1.8% max (FIFA Basic certification). We measure the football #39;s sphericity at 4500 different points and then examine any differences. If the discrepancy is greater than 1.8 % (FIFA Basic Standard), our engineers are tasked with improving the sphericity to ensure a consistent bounce. The most stringent test we put this ball through is the shooting machine test. The ball must withstand 2500 shots against an inclined concrete surface at 50 km/h from a distance of 2.5 m. At the end of the test, we check: - the ball #39;s general state: stitching must withstand this test - the circumference: must not have increased by more than 1.5 cm. - the sphericity: it must not have varied by over 1.8% - the pressure: loss of pressure must not exceed 12.5%. Product Composition Outcover 100% Polyurethane Bladder 100% Rubber - Butadiene Rubber Foam 100% Ethylene Vinyl Acetate Backing 100% Polyester After use, store your ball in a dry and ventilated place.