If you are unsure of which size to get your child, I will recommend what size I think based off real-world use. The size 3 is good for any child until about first grade or second grade, which is when a child should move into a size 4. The size 4 should last until they get to middle school (around 6th or 7th grade), and then they would move into the adult official size 5.
When it comes to soccer ball bladders, you will generally opt for the material that provides the most responsive touch for the highest levels of play. This is because it is a simple matter to re-inflate a soccer ball not to mention the fact that most competitive leagues will have numerous balls on hand. If touch and responsiveness are your key bladder attribute, there is no other material better than latex.
I bought three and used them for juggling, shooting practice and kicking against a wall. I juggled 90,000 times in 3 months, and shot many times on goal and kicked against walls. These are very durable. I look for durability in practice balls and these are superb. I wonder if Wilson has the newer cover pattern with the same internal structure in any model of ball. It would be wise to do that for the sake of staying current. I love the feel when kicking. Variable amounts of air can be used based on personal preference while practicing. A little less air allows a more forgiving bounce while juggling.
I bought this soccer ball for my granddaughters for Christmas. It arrived inflated, which concerned me. My husband inflated it with no problem and it is just fine. The ball is bigger than I thought it would be, but that is because it is a size 5 and the girls use a size 4. I didn't see the different sizes when I ordered it. It does light up very nicely and the girls love it. They got outdoor soccer nets for Christmas and I thought this ball would be great as they play late in the day. They can't wait to put it to use.
The soccer ball has gone through various changes just as the football game. As opposed to yesterday’s football ball that had stitches and seams and the classic black and white design, today’s soccer balls are designed with the latest technology that lets the ball bend more, fly quicker and also dip harder. Besides, they are quite soft that they let players kick the ball further without risking injuries. https://www.youtube.com/watch?v=DGp37du0xbQ