Here is another Exquisite Form 502. See earlier posts for a few other examples. The 502 was made for many years with only minor changes, with production ending in 2011. This bra, in a pale yellow/beige is an older model and is new old stock, never been worn. Earlier models, such as this one, were 100% cotton. Later models were a polyester/cotton blend. The back hooks on this bra are offset to one side. On later models they were moved to the center. The only elastic on this bra is the section in the back next to the hooks and two small triangles on the lower sides.