Here's the link (you just put the entire URL in the space for "optional link URL" and then name the link in the box below that -- for the original poster, I think the boxes don't show up until you click on "preview message," then it's below the space for revising your message under "you may use this form to make corrections." You can embed links in the message body, too, with just a bit of html, but using the boxes is easiest!). Cute hat!

Here is a link that might be useful: baby Santa hat

Thanks, mystery solved.