These 24oz glass jars can hold your green smoothie, coffee, tea, or any beverage of your choice. It will look amazing in your hand when you are on the go. Glas straws for the nutritious green smoothies you make! DISCLAIMER: These straws are made of durable Borosilicate glass. However they should be inspected for cracks or chips before each use. Children should be supervised by an adult at all times.