Glacier Pak for the Polar ICE Pitcher (Pack of 1) Glacier Pak made to fit the Polar Ice Pitcher Plastic freezer gel sealed unit designed to screw right into the Polar Ice Pitcher Ice Chamber Store in the freezer until ready to use - Buy several & pop in a new reuseable one as needed! One Glacier Pak in the Polar ICE Chamber keeps beverages ice cold without dilution from the ice.