I purchased light-up-soccer ball for my grandson for his father's birthday (Brooks Bowers) who has officiated games, played games and loved soccer for many years. And I have a picture of my grandson (Kieran) smiling at the rolling lighted ball after he kicked it. I thought it a well made, worked as it arrived with batteries already installed and a wonderful gift. To my surprise my grandson at age 3 is already attending soccer camps for young children.
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.
Soccer balls also have various sizes that you can choose from, and what is best for you will depend on how old you currently are. Soccer balls come in different constructions in the inner bladder and the lining, which can contribute to their responsiveness on the field. Panels on a soccer ball are also important since they can influence a ball’s flight characteristics, and the control a player will have on the field. Like any other sporting equipment, picking the right soccer ball, if you are very meticulous, is something that will need some key points to consider.
Huge fan of Bend-It, I would not consider buying any other brand of ball. I have 4 or 5 different styles that have been used and abused during club training and off-season indoor games. It's fun watching another coach pick it out of a crowd of balls to check the brand. I've even had a pro player pick this ball out of a crowd to use in group training sessions (Go STL FC!!)
Changes in temperature will also affect the inflation level of the soccer ball. Extreme heat or extreme cold will alter the shape of the bladder and this will affect the integrity of the soccer ball. Although it doesn’t seem like you could reach an extreme temperature that could do this to a soccer ball, just leaving a ball in your trunk or the back of a van on a hot Summer’s day will do it.