Fat bikes are mountain bikes that have freakishly large wheels. Why would anyone ride such a funny-looking bike, you might ask?
Because the oversized tires, which run at extremely low pressures, are specifically designed to roll over snow, sand and other unstable terrain. In the northern hemisphere this time of year, fat bikes help to extend the mountain biking season.
Learn what a fat bike is made for, how it works, how much it weighs and more, in this article.