It depends on its intended use. Soccer ball casings are made from three kinds of synthetic materials. Polyvinyl carbonate (PVC) which is what most less expensive training balls are made from, Polyurethane (PU) which is the preferred ball for soccer tournaments, and a combination of the two. There are also foam and rubber training soccer balls for kids. Some kids' soccer balls are made of 100 percent thermoplastic polyurethane (TPU), which is a kind of foamy casing material so the ball is very soft. There are greater and lesser grades of each kind of material. PU-covered balls are generally softer, livelier, and have a better feel to them, and are what most people seek when looking for a optimal performing soccer ball.
This year, the ball shouldn’t have that kind of impact on which team wins the World Cup. In wind tunnel tests, Goff found that Telstar 18 has a very similar aerodynamic profile to the 2014 Brazuca ball, which flew without the wobbles of the Jabulani. The Jabulani was the first ball to have six seams and despite having a roughened surface, it was too smooth, says Goff. When the Brazuca was released, it had 68 percent more seams than the Jabulani to help change the airflow around the ball. The Telstar 18 is even more improved. Instead of transitioning to laminar flow in the middle of free kicks, Goff found that the Telstar 18 goes through its drag crisis at a lower speed of 38 miles an hour.
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As always with Nike balls, the Merlin has an excellent feel, particularly when passing. The ball is also great for shooting due to Nike’s 4-panel construction, 360-degree sweet spot technology and the soft polyurethane outer material. It won’t deviate too much in the air due to the thermally-bonded pentagonal panel layout, so it’s perfect for training as well as games.
The Adidas Starlancer Performance soccer ball is great for beginners and experienced players. The inside of the ball is a nylon-wound carcass that is highly durable. The outside of the ball is composed of a special TPU material and is designed to withstand hard impacts. The ball arrives deflated, but once it is inflated the butyl bladder keeps the air secured inside. The bladder also gives the ball it’s round shape. The ball is available in a bright pink and blue design as well as a bright green and black design.
The secret to the authentic movements on a rebound with this ball is the inclusion of an SBR foam layer underneath the PU cover. This allows the power of a pass or shot to be transferred with more accuracy. It keeps the ball somewhat soft to the touch, but creates a realistic movement which allows players to develop an ability to start reading the game with accuracy without the need to purchase an expensive premium match soccer ball. It comes in all of the standard sizes and offers 4 unique design options, allowing players of any age or ability to begin working on their soccer skills.
Everything becomes scaled down for smaller soccer players compared to the adult game. Kids play on small fields nowhere near the size of a full regulation field 100 or more yards long, with as few as three players compared to 11 for grownups. Even in a league, parents may serve as referees, games may last only 20 minutes and scores more than likely won't be kept. In keeping with this small world, kids' soccer balls are also smaller.
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. 
Another replica ball, the Adidas MLS TOP Glider is the exact copy of the match ball which used in the Major League Soccer. For enhanced visibility, this ball is designed in alternating colours so that the footballers can see it from long away. And when it is available in three stylish colour contrasts, everyone can purchase it as per his personal choice.