Carpet markers for classroom are made of nylon material that is , strong adhesive but no harm to the carpet. The carpet markers are good for marking sitting, sports and , such as gym workouts, obstacles, child color tracking, yoga standing, and so on. Features -Color:Assorted Color -Material: Nylon. -Size: About 10.00X10.00X0.20cm/3.93X3.93X0.08in. - Excellent teaching aids. In addition to normal use, our classroom carpets can be used in many ways. - Maintain classroom organization.Using this carpet marker for classrooms, you can easily attract kids‘ attention. - You can also use these carpet markers in exercises, yoga, parties and competitions. - Our classroom floor points are safe and extremely hard industrial grade nylon to ensure durability. - Creative and practical positioning stickers can help children learn colors. Package list: 30 x carpet markers