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.
Now you know that there are total 5 variations in ball size. Buy the appropriate size as per your requirement. Some buyers who don’t know these differences, make a mistake while buying. For example, if someone is looking for an official match ball, but they purchase a size 3 ball by mistake or because of lack of knowledge. If you also do this, surely you are not going to be satisfied with the purchase.
Comfort during the shot should be the number one factor to watch out when you are buying a beach soccer ball. Senda Playa offers you that comfort from its larger, and softer panels. So, you will find it very easy to shot the ball barefooted. The panels are scratch-resistant too that makes it suitable for playing on the rough sand beach. No doubt, like any other beach ball, this one also offers water-resistant cover too.
Due to it being significantly softer than the other types of rubbers used for soccer ball bladders, latex is generally seen as the premier material. Though, this same perception may not hold as true for practice balls or even game balls at lower levels of competition. This is because latex bladders retain air worse than all of the other soccer ball bladder materials and will need to be re-inflated more often.
Size 5 is the official size for professional matches. Therefore, this ball is only available in this size. Do not use this soccer ball on concreted areas. Its unique rubber uses Puma Airlock Valve Technology (PAL) in order to facilitate proper airlock technology. This ball features Perimeter Balance Technology (PBT) which enables it to maintain impressive flight characteristics. https://www.youtube.com/watch?v=j2Xn84L3Kcs