Devices and methods that allow for rapid and efficient changing of duvet covers, comprising an upper section and a lower section of washable material that are sized to be significantly larger than a duvet that will be covered and isolated. The upper and lower sections are secured together along a single edge only, and that edge is positioned at the head of the bed. The duvet is placed between the upper and lower sections, isolating and enclosing the duvet, thereby preventing the duvet from becoming exposed while the bed is in use, and simultaneously allowing for easy and rapid changing of the duvet cover after use.