2010 Jabulani Adidas This ball has 8 panels. A special variant was used for the final match, the gold Jo'bulani (picture on the left), which was named after "Jo'burg", a standard South African nickname for Johannesburg, site of the final game. The ball was notable for the controversy it attracted, with players and fans contending that its aerodynamics were unusually unpredictable. 
The soccer is the world's most popular and widely watched game. Due to increasing technological advancement and demand for performance, the ball manufacturers have been developing new designs progressively. A traditional spherical football made of 32 leather panels stitched together in 1970s has become only 14 synthetic curved panels thermally bonded without stitches ball in 2006 and more recently 8 panels football in 2010. Despite being most popular game in the world, scan data is available on aerodynamic properties of footballs especially Jabulani, Teamgeist and Fevernova balls. The primary objectives of this study were to evaluate aerodynamic performances of these three soccer balls. The aerodynamic forces and moments were measured experimentally for a range of wind speeds. The aerodynamic forces and their non-dimensional coefficients were determined and compared.
Weighing 14 to 16 oz., a No. 5 ball is the largest-sized ball, and players 12 and older can feel like grownups upon graduating to this size, also used by adults. Its circumference is 27 to 28 inches. Prices can start at $15 for a cheap training ball and up to $150 for a match quality ball, especially if it is a special edition issued in conjunction with the World Cup or Olympics.
I read a few bad reviews on here but I didn't think the ball will be that bad. I had this ball for just a week! It looked great in the box but it's a very low quality soccer ball. It got deflated after hitting the post. There were marks and slits left on it after everything it hit. Might be good for kids but if you play soccer on a high level, you're really wasting your money buying this.
This can be used as a great option for goalkeeper training as well. Why? Look, you can hardly see the lines on this ball, hence you won’t be able to guess the direction by only seeing the spin of the ball. That means as a goalkeeper you will have to give full concentration to detect the direction of the sliding balls. This is obviously helpful if you are a goalkeeper, and looking for a sliding challenge.