Size: approximately 4 × 2.2 × 0.78 inches, weighs about 14 grams. 8 colors, 1 for each color, total 8 pcs. Made of high quality EVA foam and felt bottom, non-toxic and odorless. Can be hand washed with water and soap for reuse. Built-in magnets to stick firmly to whiteboards, refrigerators, and metal surfaces. Wide range of uses. Suitable for home, school, office, game room and other places. Magnetic Dry Erase Erasers, 8 Pack Whiteboard Erasers, Dry Erase Board Eraser, White Board Eraser Cleaner, 8 Colors, Office Classroom Home Supplies