Soft microfiber eraser performs on all dry erase surfaces (melamine, porcelain, glass and other dry erase board surfaces). Use dry or wet to clean everything with outstanding results. A good tool for schools, therapists' offices, work or home. Board Eraser Application: All Dry Erase; Eraser Pad Material: Microfiber; Eraser Width: 3"; Eraser Depth: 5".