What is the difference between a slide, sandal and a mule?

You may or may not have recently heard of mules or slides. But you've undoubtedly seen a pair of these fashionable, peculiar-looking (maybe) shoes on Instagram. Don't worry; we'll discuss slides vs. mules and what they are in a moment. You might first dislike these. But after giving your favorite fashion bloggers a second or third look, you're sure to fall in love with them.