16oz Pilsner New from Duckhouse - this Pilsner keeps your beverage cold for hours. This high quality crystal freezer pilsner, keeps beverages colder than other freezer mugs! 16oz Pilsner shape combines state of the art refreezability with team colors and graphics! Eliminates the need for ice as the technology keeps drinks ""crushed ice"" cold for hours without the watered down affect of ice! Place in freezer one hour or more prior to use, when frozen crystals will turn a frosty white color. Filled with non toxic, refreezable crystals. Not recommended for Dishwasher or Microwave.