Some running shoes are timeless because of their classic, simple good looks. The Grid 9000 is timeless, in that it has stayed consistently popular after its time as a performance running shoe passed. It is not timeless in the sense of not being able to place what era the shoe originally came from.
The Grid 9000 was introduced in 1994, and is definitely a product of its time. The ultra chunky cushioning and asymmetrical tongue that go along with the signature GRID support system, not to mention the color schemes, are the ultimate tribute to the boldness that defined the aesthetic of the mid 90s.
If a size is not listed, it is sold out.