350PCS: Perfect for daily drinkings, such as juices, iced coffee and liquid like water and soda at home, shop, office and etc. But we suggest to dont use it with thicker substance such as shaker or smoothie. As it is paper straw, not a plastic straw.They will perfectly fit in mason jar, beverages cans, beverages slim cans, mugs, wine tumbler, party cups,etc.THICK AND STURDY: Made with multiple layers of thick paper,and it will not easy to disintegrate, melt, fall apart, or get soggy in cold/warm liquid for an extended period of time.ECO-FRIENDLY 100% BIODEGRADABLE MATERIAL: Say no to plastic waste Our Straws are made with 100% biodegradable environmental friendly materials, no plastic, BPA free, food safe ink and paper. And our Eco-friendly packaging, no plastic.ONE TIME USE - Paper straws are not reusable. Not recommended for use longer than 6-8 hoursName:Disposable paper strawsColour: BlackMaterial: Kraft PaperSize: 196 x 6mmPackage Contents:350 x Disposable paper strawsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.