Bitrix. How to display Trade Offers properties in a card?

Question

1C-Bitrix

I can't figure it out, there is a product card on Bitrix
. Additional properties are set in trade offers, Length, volume of the dressing gown.
I want to display these properties in the card, which will change depending on the size selection (dynamically on the page)
. ['VALUE']; ?> so only the properties from the main product card are displayed, but not from Trade offers