This may depend on the student, their preference, and the climate. According to Manor and Miller, it’s important to have at least two sets, “one on the bed, one in the laundry bag (hopefully on its way to the machine).” Before heading off to college, make sure your student knows how to do laundry and how often it should be done. If they are going to school in a very cold climate, flannel sheets are a cozy winter option.