16 ounce ceramic coffee mug for Registered Maine Guides. It doesn't matter whether you are right or left handed because your "decal' will show regardless of which hand you hold the handle.
The white mug has a dark green handle and matching inside for contrast. The colors of the "decal" pop out. My trusty RMG friend that is a retired Captain says, that having a dark interior means that you don't show the dirt and more importantly coffee stains. I'll let you decide.
This mug is dishwasher safe and is BPA free.