Every fall, one specific shoe style dominates footwear trends: mules. These sleek slip-ons are a seasonal staple, thanks to their versatility and comfort, and there's no doubt that sliding on a pair is a quick way to feel polished. Go ahead and step foot into the trend this year with Amazon. The retailer has a wide selection of new arrivals - including pieces from brands like Cole Haan and Sam Edelman - all priced under $75. Rather than sifting through pages of options, though, we did the heavy lifting for you.