High-Quality Materials: This stainless steel straw is made of food-grade 304 stainless steel, non-toxic and rust-free, with no peculiar smell even after prolonged use. The straw's surface is polished, the edge is smooth, and it won't hurt your mouth. Collapsible Design: The metal straw's collapsed length is 3.93 inches, and its maximum extended length is 9.25 inches; they can be adjusted to fit any cup. Very convenient and easy to use, you can enjoy your drinks, coffee, tea, milk, and juice. Reusable: These telescopic reusable straws can replace daily-use plastic or paper straws, reducing environmental and marine pollution. With a telescopic cleaning brush, you can easily clean the straw, keeping it always clean. Portable: 2-pack collapsible metal straws with an aluminum case. The straws can be placed in a keychain case after shrinking, lightweight and small, fitting in your pocket, handbag, backpack, or briefcase. The keychain design allows you to hang it anywhere. Wide Application: Reusable straws are perfect for fruit juice, milk, coffee, tea, water, and carbonated drinks; suitable for family parties, outdoor picnics, hiking, travel, and office use.