This reusable straw is a great way to reduce your environmental impact while still enjoying your favorite drinks! Made from durable and safe materials, this straw is designed to be reused over and over again. It's easy to clean and comes with a convenient carrying case, so you can take it with you
From Wikipedia
A drinking straw is a utensil that uses suction to carry the contents of a beverage to one's mouth. A straw is used by placing one end in the mouth and the other in a beverage. Lowering the pressure in the mouth causes the surrounding atmospheric pressure to force the liquid through the straw and into the mouth. Drinking straws can be straight or have an angle-adjustable bellows segment.