Letterpress printed by hand using ink mixed with salt water drawn from the Atlantic Ocean! East Coasters make a great gift as wedding favors/ gifts, stocking stuffers and even in a care package for family and friends away! These coasters are reusable. The ink is permanent (will not run). Dark liquids like coffee and red wine will stain, but they hold up well under glasses of water and beer! Comes with a reusable cardboard box for storage. Dimensions: 3.5" diameter and 2mm thick (heavy weight) Packaging dimensions: ~3.5" x 3.5" x 0.5" Check out the listing for the retail display box!