The Inner And Straw Are Made Of Food-Grade 304 Stainless Steel, Which Is Healthy And Tasteless, Corrosion-Resistant And Oxidation-Resistant, Free Of Heavy Metals Such As Lead And Cadmium. Food-Grade Pp Plastic Cup Lid, Food-Grade Silicone Sealing Ring, Bpa-Free. The Shell Is Made Of High-Quality PP Plastic Material, Which Is Delicate, Comfortable To Hold And Easy To Clean. Removable Cup Lid, Push-Pull Sliding Opening And Closing Straw Hole/Straight Drinking Hole, Free Choice Of Straw Or Straight Drinking.Stainless Steel Straw Is Reusable, Freely Bendable, And Equipped With a Straw Brush, So You Don't Have To Worry About Cleaning.Stainless Steel Seamless The Liner Is Corrosion-Resistant And Easy To Clean!