Nu Board A3 Size USA Edition NGA302FN08 Size: 425 x 310 mm (16.7 x 12.2 inches) Weight: 870 g (30.7 oz) 4 boards (8 pages); 8 sheets,Anti-slip. Materials: Paper, Polypropylene Whiteboard marker is not attached. *The instruction manual attached to this product is in Japanese. Nu Board A3 Size USA Edition: Meetings with four to five people Nu Board A4 Size USA Edition: Individual brainstorming and providing explanations with illustrations Nu Board Memo Size USA Edition: Memos and to-do lists Write only with a whiteboard marker. Writing on board surfaces will become difficult to erase after approximately 2 to 3 days and on sheet surfaces after 3 to 5 hours.(A4 and A3 Size) Writing on board and sheet surfaces will become difficult to erase after approximately 7 days.(Memo Size) When erasing writing, use the eraser after ink has dried. Erasing prior to ink drying may cause ink to smear and spread. In the event boards or sheets become blackened or difficult to erase, use a whiteboard cleaner or alcohol towelettes. Boards are made of paper and may deteriorate if very humid or dry. Avoid leaving or storing in a location under the direct airflow of an air conditioner or heater. Doing so may cause curling or warping. When storing ensure marker is kept horizontal.