Double Wall Insulation: Keeps Beverages At Ideal Temperatures For Hours | | Leakproof: Offers A Tight Seal To Prevent Spills And Leaks; Not Recommended For Hot Or Carbonated Beverages | | Comes With A Bpa-Free Straw Lid That Is Dishwasher Safe On The Top Rack | | Cupholder Friendly | | Limited Patent Pending | |