“People who get their feet wet must learn to take their medicine,” Mary Poppins declared as she dispensed a mysterious liquid from an unlabeled bottle to her wary charges in the 1964 film. We now know that you can’t actually catch a cold from being wet and cold, but caregivers are still just as passionate about keeping children’s feet warm and dry.Great rain or snow boots can assist with this worthy endeavor. After testing 31 pairs, we have nine to recommend, in sizes from toddler to tween. Some excel in snow, others are made for puddle-jumping. But every boot on this list will help kids brave the elements with comfort, style, and resilience.