3.5 in. diameter.
Serve up some contagious fun! Set of 10 coasters illustrating five magnified pathogens: influenza, strep, botulism, common cold and e-coli. Information about the pathogen is on the back of each coaster.
Cleverly packaged in a petri-dish look-alike case. Letterpress printed on recycled mat board using soy-based inks.