If you're still rocking the sneakers you rocked sockless all last summer, it's safe to say they smell like hot garbage. Let 'em go and get a fresh pair. We found 20 great summer sneakers that look good clean and dirty. Plus, they won't hurt your wallet, which means you can cop multiples or shred in 'em as much as you want. Here's are the coolest Simple Summer Sneakers Under $100.