KALT CHANGING BAGS ARE EXCELLENT FOR LOADING FILM TANKS, BULK FILM LOADERS, REMOVING BROKEN FILM FROM CAMERAS, ETC., WHEN YOU DON’T HAVE A DARKROOM HANDY. BLACK NYLON RUBBERIZED ZIPPERED OUTER SHELL, WITH SECOND ZIPPERED INNER SHELL COMPLETELY LOCKS OUT ANY DAMAGING LIGHT. ELASTIC ARM HOLES.