They are wheel-trown with stoneware and satin glaze, each piece may vary slightly in size and pattern from one to the next.  
 
ESPRESSO SET: Set of two ( 2 ) mugs.
FINISH: Satin.
SIZE: approx 2.5" Ø 2.5" H  | 4oz
 
REGULAR  
FINISH: Satin.
SIZE: approx 3" Ø 3.5" H  | 8oz
CARE: Handwash is recommended.