Trandpter 30 Pack dry erase markers are 100% Safe to kids and adults.They can be used in the Classroom,Office or Home.Each water-based and low odor glass marker is ideal for the classroom or the conference room with no fear of strong, distracting smells. Easy to use and wipe off. With 13 vibrant unique colors, you’ll have more than you need to let your imagination soar! Just creat your colorful style.