Fozzils ThinkFLAT Bowlz  (2-Piece) Made from a high quality,recyclable,food-safe polypropylene with unique properties Heat resistant to 110 degrees C (230 degrees F) which is slightly above boiling temperature Items have non-stick surfaces and unfold for easy cleaning The product Holds 600ml (20.4 fl. oz.) These unique properties making it highly suitable for folding and re-folding without breakage