designed by a fashion designer Yumi Katsura made in Japan with original box Box has stains from age, 30~40 years. Materials is lacquerware, plastic, or ABS resin, I’m not sure microwave x , oven 2 large owan bowl (15cm wide, 7.5cm tall) good use for ramen, soba, udon, katsudon, miso soup, donburi 2 Vintage Unused Owan Bowl Set Made in Japan Designed By Yumi Katsura With Original Box