Fits a regular (traditional) 12 ounce can. The fastest and coolest way you can possibly chug a beer! Can puncturing button device is the secret for a perfect shotgun every time. Insulates to keep your drink colder for longer, not that you'll need it, but it still does. Great gift and loads of fun, get a few and try races. 

Instructions for Use: 

1. Insert Can 

2. Pop the top 

3. Tip can up and begin drinking 

4. Push button firmly and quickly enough to puncture hole 

5. Chug your beer super fast