This generously sized stacking coaster is designed primarily for cold drinks and to help protect the surface of your table or desk from direct condensation. The best material choice is one of the white or colored strong & flexible options but you can use others based on your preference. The strong and flexible plastic options also provide a volume pricing discount if you purchase a multiple number of designs contained within one design file. The discount significantly lowers the price of each individual coaster.
http://shpws.me/oZX0 1 coaster in one file (no volume discount)
http://shpws.me/oZYw 2 coasters in one file (adds volume discount)
http://shpws.me/oZYK 6 coasters in one file (adds volume discount)
You may want to protect your coaster(s) with a spray lacquer or other coating prior to use to prevent stains or permanent discoloring with use. Also some printed materials are porous and a water-proofing treatment may be necessary to prevent the coaster from absorbing moisture.