Hobonichi Cover on Cover is meant to protect your planner's cover from unwanted dirt and wear over time. Please note that the Cover on Cover will not fit a Hobonichi Planner Book Only. The Cover on Cover is designed to specifically fit over a Hobonichi Cover and will not fit other notebooks or planners in their respective sizes.
For the Weeks size, the Clear covers are designed to fit directly on the Hobonichi Weeks cover. Some planners such as the Leather, Smooth, and PVC weeks styles are made to be used without a protective clear cover. For extra protection with these styles, a fabric cover or pouch is suggested.