Can we add URLs anywhere in iProcurement

Can we add URLs anywhere in iProcurement?

Here is my requirement...we have spec sheets for some of our items from our suppliers.  We would like to tie this into iProcurement if possible, probably at the item level.

For example say 3 items from supplier X are all on this spec sheet at the supplier's website.  We'd like to have a link to that spec sheet available for users to click on in iProcurement.

Is there anything that can be added in the Item Attribute section or elsewhere that would allow this?

I know we can do images and tie them to the item, but I don't think this would work since they are PDFs and one sheet might have multiple items on it, so we wouldn't really want that showing as the product image.