... Simply put, the Snap Capp is a plastic re-closable top designed to snap onto virtually all 12 and 16 ounce ... is a long time coming. After all, the pop-top can, portable and convenient as it is, has a ... lot of limitations. As soon as the top is open, you cannot close it, and so begins ... will completely lose all of its fizz. The Snap Capp keep the contents of your can fresh and fizzy with an ...