Be careful when putting your rotary cutter into the case. Do not grab the cutter by the blade area just in case the cutter is not closed.
Store your rotary cutter on the side with the larger pocket while using the elastic band to hold it in place. On the other side, store your spare blades in the smaller pocket and use the elastic band to hold scissors or other small tools in place.
To clean, dust. If necessary, gently wipe with a damp cloth and allow to air dry before closing it up and using.