We all know what a coffee stain ring looks like. We use coasters to avoid seeing those stains on our furniture. PostCups have made those stains fun by incorporating them into clever postcards. These illustrations are only complete with a coffee stain ring. Use the card as a coaster and when you're done -voilà!- you've artistically finished the drawing! Send them off to a loved one or show them off to friends.
Factoid: The effects of coffee hit you in just 10 minutes after taking a drink!
