Description:All-borosilicate glass, no metal, plastic-free, is a safe and suitable alternative to plastic, these are safer for the environment, no plastic.[Smooth /Functition] The surface of our straws is very smooth and rounded, scratch-proof, and they won't cut your lips, are effective anti-slip, and are easy to clean and carry.[Clear Straw] Clearly see the inner wall of clear straws glass, clear tumbler straws are smooth, and clear glass straws.[Wide Applications] Great for use in cocktails, soft drinks, and coffee. Also suitable for family parties, outdoor picnics, hiking, trips, and office use, and an excellent gift for any occasion.Specification:Straw Length: 230mm/9.06"Straw Width: 230x8mmStraw Diameter: 8mm/0.32"Straw Thickness: 1.8mm/0.71"