Please be sure to read my profile before purchasing m(_ _)m This is a set of 6 empty glass jars that originally contained pudding. Outer diameter of the jar: approximately 5cm, height: approximately 7.5cm. They were washed with dish soap after the pudding was eaten and have been stored at home. We recommend washing them again before use, just to be safe. Regarding shipping, they will be packed with cushioning material and shipped via Yu-Packet Plus. Feel free to ask any questions you may have〜(^^)