Ball, e.g. for football, basketball or American football has inner layer of material or textile around inner bladder that allows air to pass through, reinforcing layer around inner layer and outer cover layer around reinforcing layer

摘要

The ball has an inner bladder that is spherical and hollow, an inner layer of material or textile that is breathable or air transmissive and soft, that is built around the inner bladder and that allows air to pass through the inner layer, a reinforcing layer around the inner layer and an outer cover layer arranged around the reinforcing layer.