Waterproof boots come in all shapes and sizes, made with different materials and for different activities. There are times when waterproof boots will be the only thing that can keep your feet dry, and therefore warm, so not having a pair will guarantee misery. Other times, they’re not absolutely necessary, but having a pair can make life just a little easier and more comfortable. With the many types of waterproof boots available, your job, if you choose to accept it, is to determine what boots are best for you. To make a good selection when shopping for waterproof boots, consider three important factors—the activity for which you will use them, temperature outside and how they fit.