Size: 2.33 x 3 Matte coated vinyl magnet.Our magnets are 15 mils (.38 mm) thick. Keep in mind, mil is not short for millimeter. Mil is a commonly used measurement for products like magnets & stickers. For reference, our vinyl stickers without the liner are 7 +/ - mils thick. (0.007 inches or 177.8 microns). When still on the paper backing, our stickers are 15.45 mils thick (0.015 inches or 392.43 microns). Cameo Silhouette Female - Vinyl Magnet