Corkcicle and Yeti mugs are both popular insulated coffee mugs, but they have some differences. Corkcicle mugs have a sleek, modern design and come in a variety of colors and patterns. Yeti mugs have a more rugged, outdoorsy design and are available in fewer colors. Corkcicle mugs are not dishwasher safe, while Yeti mugs are top-rack dishwasher safe.