Straws are slender tubes typically made from materials like plastic, paper, or metal. They are designed to help people drink liquids easily by creating a siphoning effect. When a person sucks on one end of the straw, the liquid is drawn up from the container into their mouth. Straws come in various sizes and shapes, catering to different beverages. For example, wider straws are often used for thicker drinks like milkshakes, while narrower ones are suitable for juices. Some straws are reusable, promoting sustainability, while others are single-use, raising environmental concerns related to plastic waste.