20% Off All 2025 Dry Erase Calendars thru December 31st. OptiMA® roll-up dry erase calendar magnets are printed magnetic sheets featuring a high-quality dry erase surface that easily adheres to any clean, smooth steel surface. These versatile roll-up calendars can be unrolled and applied to steel surfaces or magnetic receptive dry erase boards and chalkboards, providing a convenient way to keep your schedule visible. If our available calendar designs don't meet your needs, simply contact customer service, and we can create a custom design for you. All of our roll-up dry erase calendars are proudly made in the U.S.A. with a combination of domestic and imported materials. A helpful tip: The exclusive OptiMA® dry erase surface is compatible with both damp erase and dry erase markers. Damp erase markers require a damp cloth for removal, making them a safer option if you want to avoid accidental erasure, while dry erase markers can be wiped clean with any soft cloth.