This superior chalk is 95% pure calcium carbonate and is free of foreign materials that work their way into the board surface causing scratching, streaking and pitting. Round stick fits many chalk chucks.
[This review was collected as part of a promotion.] This chalk has a classic rainbow vibe, with imaginative colors. They are smooth and easy to use, they show up bright. They are great for art projects, and for kids to doodle with. They are long lasting, and come off hands cleanly with soap. My only issue was with them breaking after a handful of times, and they can be a bit messy. Definitely having newspaper below the paper, helps from having a mess. They are fun to use, and the colors stay on the paper.. Jcar88. MO. Wed Jan 29 2020
