Material: Made of foam and felt, lightweight and , can serve you for a long time Size dimension: 1.97 x 1.97 inch/5 x 5 cm, thickness is 0.79 inch/2 cm, suitable for both children and adults. Easy to use: Contains soft magnet, can stick to the board and metal surfaces easily, helps to save space, a practical necessity for classrooms, , office Washable board erasers: Can be cleaned repeatedly, wash with water and soap, air dry Compatible with whiteboards/chalkboards, dry erase sheets, melamine, porcelain and glass surfaces, to effectively clean the whiteboard, you need to press the erasers a little harder Color: as shown Material: foam + felt Package Contents: Package: 150 x eraser (50 pieces each blue, green and yellow) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.