Each of these magnets measures approximately 2x3 inches and the image is made entirely of text! The four magnets show Neil deGrasse Tyson, Bill Nye, Stephen Hawking, and Carl Sagan, each with a quote about our place in the universe. Please note the text is small on these magnets. For more reading fun, each of these is also available as an 11x17 print or a theatrical-size poster. These magnets are perfect for the fridge, the office, or locker. A fun little gift to tuck into a greeting card your favorite science fan will appreciate. Each magnet is designed, printed, stamped, packaged, and shipped with care by an independent artist. Thank you for your support!