I color code everything at my desk at work including the files. The grade on these are more thick than regular file folders and are great for when you have lots of papers to file. They hold up really nice in hanging file folders and don't bend or wrinkle like the usual grade. I wish they came in more colors but love them anyway!
I had purchased the cheaper manila file folders about tw years ago and used them to organize my important papers. Over time the files buckled and slid down in the file cabinet. Papers fell or slid out of the files and everytime I go in or out of the file cabinet it was a frustrating situation. I decided to buy the heavy duty manila file folders and relpaced the cheaper ones. These new heavy duty file folders are stiffer and more durable then the previous ones I purchased. I would recommend these to anyone in need of flie folders. I would not recommend the flimsy ones I originally purchased.
I use the files for file folder games for my students. They have to be durable. The different colors are attractive for young students. I also can organize my files by color.
As part of my line of work I had to find a way to get organized running a household for disabled individuals. As well most of the documentation cannot be in electronic form it must be on paper and constantly in my posession. I carry around a "file cabinet" in my shoulder bag and the heavyweight file folders are perfect for my needs. They are multi-colored to help sort and identify topics. The heavy weight of the folder paper is holding up to my "abuse" as I drag around my bag and constantly access the files to do my job.