How to set up different order sizes

[myen]

I need to set up some of the products to have different sizes, such as small, medium and large. How can it be done?

[lemmings]

You just need to set-up portion sizes in the relevant product item.

You can remove the default normal and add a portion type which can be customised to your own needs.

For example, I have a drinks product Diet Coke which is available in Can, Bottle, Glass or Jug, so my Product Diet Coke has all these portions listed with the relevant price for each.