If you need an additional cooling option, the Chill Stick is a simple way to keep your beverage cold for hours. It is an approximately 6" long stainless steel tube filled with a freezable, non-toxic gel. The Chill Stick is simply placed in the freezer, then gently dropped into the Beer Tube, displacing approximately 8 oz. It's easy to use, easy to clean, and provides hours of extra cooling power! This product will work with all Tube designs.