Apply onto any smooth surface. No hooks and no holes on the walls needed. Just peel and stick! Large enough to write in an event for each day, and easy to read with white text on a black chalkboard background; just fill in the dates for the month, your customized notes, and wipe clean when it's time to change to the next month. For even more organization, purchase 3 calendars and put them up side-by-side to see upcoming monthly schedules as well. RoomMates wall decals are an easy and affordable way to decorate in minutes. Reposition or remove them effortlessly with no remaining sticky residue or damage to walls.