QMx Firefly Troublemaker Bowl Set Stoneware Made in USA or Imported Based on a T-shirt made famous by mercenary Jayne Cobb in the sci-fi Western TV series Firefly, our ceramic bowl set is perfect for snacks, soup, cereal or whatever your troublemaking heart desires Made of sturdy stoneware, each bowl has a removable silicone ring to protect surfaces and prevent sliding Dishwasher, microwave and oven safe up to 480 degrees F or 250 degrees C Small bowl: 10 oz (295 mL) Medium bowl: 18 oz (532 mL)