Paper colors are great but they don't hold any kind of ink including ball point gel and Sharpie. I noticed I had ink all over my hands after handling these a couple hours after using markers on them. I looked again at the cards and they were all smudged. Re-tested with a ball point pen a gel pen and then a Sharpie. All three smeared easily. Will be returning them to Staples.
This is exactly what I needed for my classroom icebreaker activity. The variety of pastel colors make it easy for me to assign different cards for different groups but the colors are not so bright that the students have a hard time seeing what they have written even if they use pencils instead of pens. This item worked so well that I went ahead and bought enough for the next several semesters.
I purchased these cards for a class and used the cards for a survey and used the various colors to differentiate between the questions. Cards worked well for the purpose.
These are thicker than copy paper but way too low a weight to be index cards. Really flimsy and not durable. Pretty disappointed and am already looking for replacements at a different store.