Made of wood. As you can see, the condition is very good. There is no discoloration due to burning. Size: Large: Bowl 12.6cm x 7.1cm Lid 11.7cm x 5.0cm Small: Bowl 12.2cm x 5.8cm Lid 11.1cm x 4.0cm Tea ceremony utensils Tea ceremony practice Kaiseki utensils Tea kaiseki Tea ceremony dinner Komaruwan (small round bowl) Shiruwan (soup bowl) Iwan (rice bowl)