Hard to imagine though it may be, there was a time in the not-so-distant past when you could only buy sneakers from your own era. There was no such things as "retro" sneakers, unless you counted Converse All-Stars, and finding last year's models meant digging in dusty basements. Now, the whole of sneaker history is on display every time you walk into Foot Locker. Sure it can be overwhelming, but that's a good problem to have.