Showa Retro Blue Glass Round Bowls - Set of 2 While the material and manufacturing process of the glass are not entirely clear, it appears to have small air bubbles scattered throughout, similar to Ryukyu glass. Perfect for the hot season, these bowls are suitable for cold dishes like somen noodles or fruit punch. Please refer to the photos for the condition and size of the items. There may be minor imperfections not discernible in the photos. Returns, refunds, and claims are not accepted. Please understand that these are retro items, and those seeking perfection or who are overly sensitive should refrain from purchasing. - Color: Blue - Material: Glass - Shape: Round Showa Retro Round Glass Bowl Blue Air Bubbles