Avanti Glass Smoothie Tumbler 580ml NavySummary Features Notes Enjoy your favourite beverage on the go with the Avanti Glass Tumbler with Straw. Perfect for smoothies, juices, iced tea, water and more, the tumbler is made from borosilicate glass, so it wont leach, stain or smell. It features a silicone sleeve that protects the glass tumbler, provides a non slip grip and reduces condensation. The stylish ethically sourced bamboo lid prevents spills and the silicone seal ensures it is splash