Durable Tritan™ Material. Impact And Shatter Resistant. Snap-on, Spill-Resistant Thumb-Slide Lid. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Decoration Is Inserted Between The Clear Double Walls Of The Mug Then Ultrasonically Sealed To Provide Double Wall Insulation. Made In The USA. Top Rack Dishwasher Safe. Freezer Safe. BPA Free. Meets FDA Requirements.