1.Package includes: 48 x square whiteboard erasers including 16 piece blue 16 piece yellow 16 piece green meet your color needs.Size(LWH): 1.97x1.97x0.79 inch/5x5x2cm. 2.Material: made of foam and felt lightweight and durable the chalkboard eraser is eco-friendly non-toxic and no smell.Having a soft comfort grip.Suitable for children students and adults to use 3.Washable chalkboard erasers: chalkboard eraser can be easily cleaned and reused after long-term use wash with soap and water air dry 4.Magnetic whiteboard eraser: with soft magnetic can stick to metal chalkboard and surfaces easily help to save space and prevent loss. 5.Application: compatible with white and black boards dry erase sheets melamine wallpaper stainless steel porcelain and glass surfaces.Whiteboard erasers are great for classroom home and office use