Cool to the last sip! the Chillsner by Corkcicle is the one and only in-bottle beer chiller that keeps cold ones cold from the first sip to the last. Whether drinking from the bottle or as you pour into a glass, the Chillsner keeps each sip icy cold. Freeze Chillsner for 45 minutes. Before using, take a drink of beer to make room for Chillsner. Insert Chillsner into bottle. Press firmly to create a tight seal. Note: use caution when first inserting as some beers may foam up slightly. Enjoy the Chillsner's drink-through feature and complete coolness. Never deal with warm beer again! perfect for parties, tailgating or pretty much any occasion where beloved beers are enjoyed. The Chillsner also makes a great gift for the beer lover in your life. By Corkcicle.