It's the classic theme package for ES File Explorer 3. 0, you must install ES File Explorer 3. 0 to use this theme. Search "ES File Explorer" for it. The classic theme use old icons of ES 1. 6 to provide an old style in ES 3. 0. ES, 180 millions global downloads, file manager trend leader on Android! Rated one of best resource management tools on Android market. V3 is coming!