Calendar Magnets - Outdoor & Car Magnets 30 Mil Square Corners are good for the promotions of boutiques, fashion shows and also clothing brands. The large imprint area available in these custom calendar magnets allows you to showcase your products and services really well. The water repellent, UV safe and fade resistant features ensures good durability for these custom printed magnets even in harsh climatic conditions. Order now for our free full-color printing services.