Google stated that it has added large search buttons that will let you filter your image searches on your mobile phone. They are new search buttons added by Google image search.
The Google spokesperson told Search Engine Land that the feature was added earlier this summer and uphold that this is not a test, but a permanent change.
Once you conduct a search on your mobile phone in Google Image Search, you will get to see that some searches will bring up larger finger-press size buttons that allows you to filter that search further. And then after you filter down your search, you will get more options.
After you get the desired result, you can click the X on the white buttons, the selected options, to clear those filtered results.
Google Ratify Addition Of New Image Search Buttons On Mobile!,