Double walled with vacuum insulation Exterior center diamond pattern Matching coloured/clear Acrylic snap-on straw lid with Plastic twisting closure Top of the included straw hides in the top lid; just twist to reveal Sipper hole on the lid can also be used for drinking For use with hot and cold beverages Holds up to 600 ml. (20 oz.) BPA free and FDA compliant Individually retail packaged See Ronbo Travel Tumbler for this item with the addition of a glass liner