in theory, the service life of the zoom air cushion is not bad (because this kind of air cushion is mostly placed inside the midsole, except for the cage). However, the durability of the Zoom depends on the shoes. Generally, the service life of sports shoes is four years, because the gum is aging (which is why many classic shoes of the first year are not suitable for taking out to play now).
or 3 miles (official evaluation standard, in fact, it will far exceed this value), which is due to the aging of the midsole filler or the deformation caused by long-term pressure.
It can be said that under the premise of normal use, shoes will "die" earlier than air cushions.