I am just getting into drawing and coloring and was searching for a paper I could run through my printer that was the next step up from copy paper. This paper (which was recommended by a few You Tube artists who teach adult coloring) definitely fits the bill as it is heavier and more substantial than copy paper with a little tooth for blending and layering colors. I don't understand the paper classification system very well, so whether this paper should be labeled as cardstock, bristol, vellum, all of the above, or none of the above is beyond my pay grade.What I can say based on my personal experience is that this is the heaviest paper that I am able to run through my printer...though not easily. I have an HP Officejet Pro 8620 (inkjet) and I kept all fingers crossed the first time I tried printing this on paper. While I was pleasantly surprised that it worked, I must add that it doesn't always work on the first try, and I sometimes need to feed the sheet through a few times before achieving success. I am therefore only able to print pages one at a time while monitoring the outcome and re-doing as needed. Fortunately, when a piece of this paper won't go through the roller, it doesn't jam anything up, - which is what happened when I tried printing on a heavier weight watercolor paper.I should note that I have an older printer, and at the time I purchased it several years ago, I wasn't even thinking about printing out anything heavier than copy paper. So YMMV and your printer may be able to handle this paper more robustly. I personally don't mind the little bit of extra time and effort involved in getting this paper to print on my printer, since I don't ever need to print more than a few pages at a time.