Bubbles are fickle things. They seem happy enough fizzing away in your drink and then before you know it they've scarpered and you're left with a fairly unpleasant flat cola flavoured water. Not nice.

We blame cans for the bubble trouble. Once they're open they let all that lovely fizz escape. Whoever put a lid on the bottle had the right idea but cans are often better value for money, especially if you buy them in bulk, and they're easy to transport unlike the large 2 litre bottles.

The solution comes in the form of can caps; genius little coloured bottle tops that snap onto the top of your drinks can forming a tight seal. Simply screw on the lid like a conventional bottle and all your can complications are resolved. Loss of fizz is dramatically reduced, the liquid becomes easier to pour and nasty wasps and bees will be forced to buzz off and mind their own buzziness.

The can tops come in a multicoloured pack of three and are totally reusable. Throw a couple in the picnic basket, take them to school, work, the cinema, parties or anywhere you can think of. They're a great gadget to keep around the home and suitable for all cold beverages as long as they come in a standard sized can.

Features:

• Reusable bottle top attaches to your can
• Pack of three mixed colours (colours will vary)
• Convenient and resealable
• 5.5cm diameter to fit standard cans