Keeps your beer cold from the first sip to the last drop. Designed to cool your drink instantly from inside the bottle and made with highly advanced cooling technology. It is just like walking around with a mini fridge in your hand, and it will be your beer's new best friend when your koozie is not up to the job. How to USE Step 1 - Wash Beer Chiller Sticks when you receive them. Freeze them for 45 minutes or more. Before using it, take a drink of beer to have extra room for chiller sticks. Step 2 - Insert the Beer Chill into your beer bottle(Quality rubber keeps seal resilient to cold & will not leak ). Step 3 - With the drink through the feature, you can start enjoying your cool beer. When finishing using it, you can simply remove and wash like a regular utensil before putting them into the freezer again for next time.