Why do some soccer balls get bigger over time?  Many soccer balls do tend to get larger over time. Especially lower quality balls! This is due to the pressure of the bladder against the linings and cover.  Over time the material and stitching may stretch out causing the ball to become larger. Also, soccer ball abuse may cause the stitching to loosen and the ball to expand.

The cheaper balls only have two polyester layers on their lining. Soccer ball bladders can be made from two different kinds of materials. They can either be latex or butyl. A soccer ball bladder is a component of a soccer ball and it is tasked in containing the air that is within the ball. It also contributes to its shape and the ball’s receptiveness on the field.
Still, despite how impressive the materials used for the soccer ball are, Adidas is not done providing one of the best products available. For instance, this ball uses thermal bonding instead of either hand or machine stitching. This has the advantage of allowing the ball to fly truer as well as resisting water better. On top of that, some sellers even have balls with embedded NFC chips, which provide all kinds of valuable feedback information on you play.
This ball also comes in sizes 5, 4, and 3 and ships at one pound exactly, and it does not appear to come inflated. This soccer ball ships within the US and is not eligible for international shipping. For the low price and quality of this ball, it is totally worth the value because the exact ball that the pros use is around $100, and this pro soccer ball replica is a fraction of the price.
These are used in international level matches and top league matches like UEFA Champions League, Italian Serie A, English Premier League, Spanish La Liga, Bundesliga, Major League Soccer. Not only these but also all the tournaments approved by FIFA. So you can easily understand that these are the highest quality balls with the highest level of air retention, shape, water absorption, trajectory, curve, and performance. Otherwise, FIFA would not have approved these balls.
The Obsidian 5 has trademark graphics paying tribute to the USA national team. It is a prestigious soccer ball to add to your soccer equipment if you love buying anything US. The material used is 12% EVA, 13% polyester, 15% polyurethane and 60% rubber. These top-quality materials ensure great performance and excellent ball control to help improve your playing skills in the field. The material is durable enough to handle day to day use, and machine-stitched construction reduces water absorption while equally ensuring durability. It has a rubber bladder that enhances air retention and shape.
Crafted by Adidas, the Telstar 18 is the official ball of the FIFA World Cup. Drawing inspiration from the company's first World Cup match ball, which debuted at the 1970 tournament in Mexico, the new ball reimagines the 12 black panels on an otherwise white design. Fun fact: the iconic original black and white ball was made that way to be more visible for black-and-white TV viewers, and it was dubbed the "star of television."
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