A midi length beach cover up dress gives you more coverage and a dressier feel than shorter versions. The length hits somewhere between knee and ankle. Midi reads as more intentional than a short cover up and works for people who want actual coverage. The fabric should be lightweight and quick-drying. A loose easy fit is what makes this work. Midi beach cover ups look good with simple sandals or bare feet. They photograph well and work for everything from lazy beach days to casual resort dinners. These dresses prove that a cover up does not have to be short to be functional. The length is what makes it feel less like an afterthought.