magnetic dry erase vertical weekly calendar for fridge with new premium stain resistant technology 17x12 inch yuc use the calendar to write down your important events. free up your mind! build your weekly todo list and never miss your child classmate's birthday party. quality matters! easy to erase - advanced technology it cleans easily even after long periods of time making it one of the best on the market. tested successfully after 30 days. no stains successfully tested for 100.000 write-erase cycles.