High Density Polypropylene | Screw On, Spill-Resistant Flip-Top Lid | Measurement Scale In Ounces And Milliliters Makes Tracking Liquid Intake Easy | Removable Strainer with Blades and Strain Allows Chopping and Mixing at the Same Time | Tight Locking Lid and Cap | Leak-Proof | Wide Opening Makes It Easy To Add Ice, Fruit or Mixes | Meets FDA Requirements | BPA Free | Hand Wash Recommended