Enjoy sustainable sipping of your cool beverages from a tumbler made from natural bamboo and glass. The combination of strong, borosilicate glass and bamboo works well to give this tumbler and straw an aesthetically pleasing look.   15 ( h ) x 7.5 ( d ) cm borosilicate glass & bamboo 500ml press-on lid with secure seal not for hot liquids hand wash recommended packaged in a natural kraft Okiyo gift box Please note that drinkware items packaged in individual boxes that are branded in-house are shipped with box lids open. This is a result of our production process to ensure efficiency. While the outer cartons are securely sealed for shipping, individual box lids will not be closed.