Latex bladders are used in high-quality balls. These kind of bladders are soft and provide good feeling. They offer better response and bounce than Butyl bladders, but the downside of this kind of bladder is they don’t hold the air for too long. As a result, they require filling more frequently. Air escapes due to micropores on the cover, but nowadays some balls are constructed with carbon latex bladder to help to close these micropores. As a result, the balls can hold air for a longer period.
The most commonly used materials for casing are PolyUrethane(PU) and PolyVinyl Carbonate (PVC), synthetic leather or a combination of PU and PVC. You can distinguish the type of casing used by touch. Balls that uses PVC usually have a hard exterior but are cheap and durable. PU cased balls are softer to the touch, high in quality and more responsive than PVC balls. Synthetic leather balls offer increased control hence ideal for professional matches or high-level playing. You will also notice a glossy finish on all soccer balls. This comes in handy in minimizing scuffing and water damage to the balls.