It's a Sock Puppet City mug! Sock Puppet City's resident mascot is here to remind you the YOU ARE AWESOME (not that you needed the reminder). In this version, if held in the right hand, the logo faces towards other to remind them they are awesome. 

Martystuff and Sock Puppet City are now offering select merchandise through Print-on-demand third party vendors!  All of the stuff I'm sourcing I try to try out at least the base product, but please let me know if you're having any problems with it and I'll make sure to make it right! I also work to make sure that these factories are ethically sourced and certified.

From the nice manufacturer:

Here to bring big gulps of coffee and style, these two-tone coffee mugs help people around the world start the day just right. 

.: Material: 100% ceramic
.: One size: 15oz (0.44 l)
.: Lead and BPA-free
.: Glossy finish