Freezable Pilsner Greenbay Packers NFL Glass Mug holds16 ounces and has unmatched technology for unlimited number of times to freeze & comes with team colors and graphics! Removes the requirement for ice to keep your drink cold which lasts for hours and eliminates the watered-down effect seen with ice cubes! Keep in freezer for one hour or more preceding use at which time crystals in glass will turn a frosty white color. Contains with nontoxic, unlimited use crystals