Every time you use reusable straw instead of a disposable one you help to keep our planet clean and you look fashionable at the same time. Our reusable high-grade stainless steel metal set comes with 4 beautifully colored straws, 2 wooden cases a carrying bag, 2 cleaning brushes, 6 colored silicone tips, and a box. The size of the straw is about 8.5” (21.5cm) in length, two straws (silver and black) are 6mm in outer diameter and two straws (silver and black) are 8mm in outer diameter. Straws are an excellent fit for any Yeti, Ozark, and any other metal or plastic tumblers, they are strong, sturdy, and rust-resistant. Enjoy your thicker drinks such as milkshakes, protein shakes, yogurts, smoothies, etc. with the 8mm straws; 6mm straws are an excellent fit for water bottles and any other thinner drinks. Each silicone straw tip is made with BPA and lead-free material making it an excellent choice of kids' drinks.