Dynamic remarketing Display ads are an integral part of eCommerce promotion. If you are hearing about them for the first time then here is a small orientation for you, Dynamic Display ads are used in cases when your website has a large no. of products for sale. As you cannot create a remarketing ad for every product, you simply create a product feed that google uses to dynamically show you the products you viewed.
Generally, we have 2 options for creating these dynamic display ads, one is to create ads through Google’s responsive format and another by uploading fully customized HTML5 ads built with Google Web Designer.
In peak sales times like cyber Monday and black Friday, HTML5 ads can enhance the overall performance of your display campaign. Here are some possibilities to consider.

We made this spec ad for Teleflora to show an advanced HTML5 capability in Google Web Designer. This ad uses the feed image as both product and background image.