Size 5 Soccer Ball Size and Weight Standards:
Circumference: Between 68.5cm and 69.5cm.
Weight: Between 410g and 440g.
Air Pressure: 0.6 to 1.1 atmospheres (600-1100 g/cm²).
Material: 3.5mm PU thermo bonded
Football liner: cloth liner process
Standard Soccer Ball Performance:
Durability: The ball must maintain its shape and size after 2,000 impacts at 50 km/h. •
Rebound: When dropped from a specified height, the ball must rebound within a specified range and not exceed 10cm.
Water Absorption: The ball's weight must not increase by more than 10% after being immersed in water.