20 Mil. - You'll never lose sight of your campaign "agenda" when you promote with the eco-friendly calendar magnet! Made in the USA and always in stock, this magnet is made from flexible magnet sheets containing a minimum of 12% recycled material. Delivery services, cable companies and realtors are a perfect promotional fit. Free stock backgrounds and full bleeds are available. A four color process imprint will spread your message wherever this hangs!