Maybe you've noticed, but there have been an awful lot of sneakers retroed over the past decade or so. If your favorite sneaker came out 20, even 30 years ago, chances are it's still available (or it's at least been available recently). However, inexplicably, some models never seem to retro at all, and others come back, but in not-so-original form. Which can be impossibly frustrating. So we looked around and came up with 20 Classic Sneakers That Deserve A Proper Retro. Some have never returned, others have — but never exactly right. Let us know what other models you'd like to see return.