Thank you for viewing. ・The straw insertion point is made of silicone. ・Size: Approximately 11 x 10 x 13.5 cm, 500ml ● Shipping will be done on weekdays from the post office, so please refrain from purchasing if you are in a hurry. ● We are sorry, but we cannot offer a discount. Thank you for your understanding. Thank you for reading to the end. Please consider purchasing with the understanding that this item is stored at home.