By no means is this type of ball similar to a typical soccer ball. For starters, instead of air, its bladder is filled with foam. In this case, the ball has less bounce and is heavier in order to facilitate its purpose; meant to be used on a hard surface indoors. This size 4 ball may also have suede castings which help to stabilize the ball on a slippery floor.
The amount that you are willing to pay for the soccer ball might influence your search. These range in price depending on its type, make, quality and other features. If you are looking for a ball to kick around for fun or for a child as a toy, it is best that you opt for an inexpensive ball as they are likely to ruin the ball or easily get bored with it shortly after. This also applies to children who are in a league as they will soon outgrow the ball hence the need for a bigger and more expensive soccer ball.
Latex bladders are one of the best materials when it comes to ball construction. However, with latex bladders, air won’t last as long as butyl bladders and will need more attention for proper inflation. Butyl-blend bladders hold in the air much better, but they are harder and less receptive in play. Mid-priced balls will usually have a mix of butyl and rubber. https://www.youtube.com/watch?v=c1SVcjYY6TE