The reason why magnetic advertising is so popular is because the production cost of fridge magnet is inexpensive and extremely cheap way to get your firm's name posted in thousands of locations. Fridge magnets custom made for business promotion and Save the Date magnets. Top quality at low cost, in small or large quantities. Put your ideas on a magnet for creative promotional advertising, refrigerator doors or just collecting. This magnet is flexible, and the most popular thickness is 0.5mm or 20mm.