These are a great product for the price. The ink is bold and vibrant. The multiple options are a nice variety and help when you need to differentiate lots of things or when you want to draw a fun picture!
When I first received the markers I loved the color assortment and for a great price compared to national brands. When I tried them on the white board the colors were clear and it was so nice to have markers with a fresh tip. The problem came when I erased -- the blue and the black definitely left a smeary residue. I had to clean it off with alcohol. I'll be returning and bite the bullet for the famous brand.
These markers are not as high quality as Expo markers but there is not too much of a difference. The cost for these is much cheaper than Expo markers. Another thing that I really like about these markers is that they are not round so they won't roll off of the table as others do. These markers do not erase as well so I would suggest also purchasing a bottle of white board cleaning spray.
I was not really impressed. The writing on my white board calendar with these were not very bright. It was almost as if they were pastel in color except for they should not be. I will not buy again.