The outer casing of a soccer ball is composed of panels made from synthetic materials, such as PVC, PU, or a combination, sewn or glued together. Soccer ball casings are rarely leather anymore, since leather tends to absorb moisture making the ball heavier and not perform as well. The number of panels or sections of the outer casing varies according to design. Most professional soccer balls are the 32-panel design. More panels mean a rounder and stabler ball, and a more accurate flight.
If you've ever noticed, a traditional soccer ball resembles a geodesic dome building. Such as the one designed by architect, Richard Buckminster Fuller. Thus the ball became called the Buckminster Ball. Or more simply, the "Buckeyball". The design is characterized by a pattern of twenty hexagon pieces, and twelve pentagon pieces, fitted together to create a perfect sphere. The soccer ball has undergone many design changes of various-shaped panels stitched together. But until the geodesic dome-like ball, it was never quite round enough to perform right. Manufacturers settled upon the modern thirty-two panel design, which enables the ball to roll and spin more evenly and smoothly. Which is probably why it's the most popular competition soccer ball on the market today. The Buckminister-style soccer ball was first sold in the 1950s, and debuted in the 1970 World Cup tournament.
The interior of the 1GK USA is a bit more mixed in terms of quality than the exterior is. However, the materials used are explicitly designed to increase the ball’s responsiveness-likely to make up for its uncommon rolling and flight patterns due to the butyl fins. Still, aside from being the only hand-sewn ball, this is also the only ball made with a latex bladder on our list. The potential downside is the cotton lining which will get heavy when wet-though it is much softer and provides better responsiveness than either polyester or nylon.

Today's footballs are more complex than past footballs. Most modern footballs consist of twelve regular pentagonal and twenty regular hexagonal panels positioned in a truncated icosahedron spherical geometry.[4] Some premium-grade 32-panel balls use non-regular polygons to give a closer approximation to sphericality.[12] The inside of the football is made up of a latex bladder which enables the football to be pressurised. The ball's panel pairs are stitched along the edge; this procedure can either be performed manually or with a machine.[5] The size of a football is roughly 22 cm (8.65 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm in circumference. Averaging that to 69 cm and then dividing by π gives about 22 cm for a diameter.
This ball has been through all of the hazards that kids can dream up. Dribbling the ball on pavement walking to the car, practicing shots against a brick school, being used as a seat, heavy use at practice, and its frequent selection as the game ball. With all of that, it still looks great with very little wear and tear. Could still pass as a new ball from a few feet away. It's held it's pressure very well. The outer shell texture allows good grip without being to soft or too hard.
7. When you are buying online this is easier, because you have ratings and comments on many stores out there. It is good to look at top rated soccer balls or best selling soccer balls. Another good source to do is by visiting soccer forums where people talk about different things and there can be also a board/post about soccer balls, what they think, their experience etc.
When I buy a soccer ball at a local store, how do I know if I am buying a good soccer ball?  Ball material information on the packaging of the balls is minimal at best. Marketing hype is hard to understand. So people are very frustrated when buying soccer balls for their clubs, teams or own use. Parents of soccer players have always asked me about what type and where to buy soccer balls for their up and coming star. "Go to the local store and pick out one that is on sale" I would tell them. The only recommendation I could make was to check out soccer balls that I previously used and knew they were good quality. 
Whereas plenty of manufacturers that we reviewed opted to go with a soccer ball that was more durable than responsive, Mikasa takes the opposite approach and focuses primarily on the touch that their ball can provide. This is most apparent in the soccer ball’s choice of casing material. The synthetic leather casing of the Mikasa is by far the softest and naturally responsive-without the inclusion of texture-out of any other soccer ball we reviewed.