This straw topper is made of 100% food degree silicone which is perfect fits for Stanley tumblers 10mm (0.4 inch) straws. There are 3 shapes to choose, round, square, rectangle. It can effectively protect the straw, prevent dust, bacteria and other pollutants from adhering and keep the straw clean and hygienic. Or prevent drinks from spilling during moving. Custom PMS color is available. Rectangle shape cost is a bit higher than round and square shape.
