How to search for .zip files

How do you search for a file of a specific type in Mac Yosemite? I cannot seem to find any instructions on how to do this.

In the Finder search I enter:

kind:zip

But it returns ALL compressed files. I only want zip files - so this SO post does not help me much. All the solutions either use bash, or I cannot find the options they refer to.

Please advise.