This Unique Mug is available in either a right hand or a left hand version. Always test your mug before sliding your fingers into the pocket. If the mug feels too hot, hold the mug by the outer flange. The bottom of the mug is a flat unglazed, white porcelain, with a matte appearance and texture to the touch. This mug is microwave and dishwasher safe and is lead free. Made in Milton-Freewater, Oregon, USA.