This is a set of straws and gaskets for the Thermos tumbler FHL-400. It is a genuine product. Straw set: Compatible model number FHL-400 Gaskets: Compatible with all FHL models I purchased these as replacements but did not use them, so I am offering them for sale. They are unopened, but please understand that they have been stored at home. If you have any questions, please feel free to comment. Thank you.