[Pluging: Woocommerce] Adding extra item info below "add to cart"

I would like to let our customers know that we offer free shipping over $99 , as well as our return policy right on the product pages. Similar to this:

What we want it to look like

We’re not quite sure how to go about adding these extra divs and what files to go to.

Here’s an example page at our site:

Our product pages now