Great for every day erasing of dry erase markers. The cloth lifts and traps marker dust and cleans dry erase surfaces without the use of sprays or chemicals. It is machine washable it can be washed more than 100 times and will continue to perform on dry erase surfaces without the need to use chemicals. Board Eraser Type: Dry Erase; Pad Material: Fabric; Width: 10 5/8in; Depth: 10 5/8in.