Match balls are constructed specifically for competition and the sport's high-level training. These balls feature higher quality materials and must conform to regulation standards of your league. Training and recreational soccer balls are designed to handle extended use on a variety of playing surfaces, often featuring a PVA casing for enhanced durability.

This 12-oz. ball works for players between 8 and 12 years old and has a circumference of 26 inches, larger than a size 3 and smaller than the size 5. This age group tends to play on a field of about 30 to 50 yards, writes Deborah W. Crisfield in "The Everything Kids' Soccer Book," with a goal size of around 6 feet high and 18 feet long. Again, the scale for the U12s falls between that of the U8s and that of the older age brackets for the No. 4 ball and the game as a whole. Some leagues may limit the No. 4 ball to U10s instead of U12s, so check league rules before making a purchase. 
When looking for the right ball for your child, you may come across a reference to different sizes of soccer balls. These sizes can vary a bit from product to product but most do conform to certain league standards. A size 1 ball is also known as a mini ball and is typically between 18 and 20 inches in circumference. This size is perfect for toddlers and early walkers to help them develop footwork skills and ball control. A size 3 ball, or a junior ball, is usually between 23 and 24 inches around. This is the type of ball that most peewee soccer teams use as it is designed for children 8 years and younger. As your child grows and continues with their soccer team, they will eventually need a size 4 ball which is 25 to 26 inches. This is known as a youth ball and is ideal for children between 8 and 12 years of age. Finally, the size 5 or adult ball is 27 to 28 inches in circumference. This is the size of the soccer ball used by professional athletes and is suitable for anyone age 13 years or older.

On the other hand, replicas (sometimes called training balls or gliders) are designed to be just like the official match balls but are much cheaper. Their panels are often stitched rather than thermally-bonded and are made of a different material. However, they’re not necessarily less durable than official match balls. So, they’re the recommended option for most players. https://www.youtube.com/watch?v=j2Xn84L3Kcs
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