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. ^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 ^Washable chalkboard erasers: chalkboard eraser can be easily cleaned and reused after long-term use,wash with soap and water,air dry ^Magnetic whiteboard eraser: with soft magnetic,can stick to metal chalkboard and surfaces easily,help to save space and prevent loss. ^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