Effectively Clean: These whiteboard erasers are made of premium ABS and fine flannel material. They can remove the stubborn marks on a variety of whiteboards, glass and note boards, etc Replaceable: Includes 4 eraser pads, with easy replacement instructions, our product's life can be extended significantly Strong Magnet: The built-in strong magnet helps the white board eraser attach to a magnetic surface for easy cleaning Ergonomic Design: The contoured design is curved to fit the palm of your hand for a comfortable grip Cleaner Included: One bottle of 3.4 fl oz whiteboard cleaner included (AP certified, non-toxic and low-odor), effectively cleans stubborn marker ink and stains on the whiteboard Replaceable Whiteboard eraser，4-in-1 Magnetic Dry Erase Board Eraser, 3 Replaceable Eraser Pads. One Bottle of 3.4 fl oz (100ml) Whiteboard Cleaner Included (AP Certified, Non-toxic and Low-odor)