These patented, double walled, self insulating, porcelain mugss are the most ergonomic mug on the market! They are hand use specific and hold approximately 10 oz. By design, Café-ERGO mugs follow the form of a cupped hand. The thumb is placed over the crescent flange and the fingers wrap around the mug. By eliminating the traditional handle, hand and finger stress usually associated with it is diminished or not there at all.
Cafe-ERGO has been independently reviewed and here is what they said.
Made in small batches in New Orleans, Louisiana