In true Hype Machine form , our suggestions have been motivated entirely by the thoughts and opinions of shoppers that have actually tried out each styles. Because while we can sit here and wax poetic about the dreamy clogs and cool mules on top of our must-wanted lists at the moment, the picks ahead have been put to the test outside the realm of cyberspace. Since assigning ourselves this mission to identify the best slippers and slipper alternatives that are comfortable and functional, we've taken a deep dive into the digital pool of best-sellers available on Zappos — the online mecca for shoes (and happy customers). The massive fanbase for this online store, known and loved for its excellent customer service, is not just dedicated, they're vocal — which means there are hundreds (sometimes even thousands!) of helpful reviews on all kinds of apparel. As a result, the indoor footwear we came up with are among the highest-reviewed styles in the categories of socks, slip-ons, sneakers, and beyond.