Plastic Coated for Color-Fastness and Durability! 12 write-on, wipe-off calendars with no daily dates-use from year to year! Write in the dates and note special days with a dry transfer marker! Use the calendars again and again! Great for classroom planning, teachers' lounge, school office, after-school center, and more. 12 blank calendars, each: 18" x 14".