How to get more details to be shown on Invoice

Hi there!

Just wanted to know something in regards to the invoice etc.

When we for example purchase a product, it shows the title and price on the invoice.

Is there anyway to show more details?

We are trying to show the before and after price along with extra details on the product.

At the moment, it only shows the product title and final price.

For example;

Green water bottle – $20

We are trying to show;

Green water bottle – $40, Now $20 (the $40 would have a line dash on it)

and under the water bottle, it would have some details like;

• Made from BPA free plastic
• Great for the outdoors!
• Made in Germany

Thanks for your help!