The product is made of wood with tear-reistant wooden tags from door knobs. It fits right over a door knob and great for keeping family while you are crafting or napping. Besides, you can use with a grease pencil, dry-erase or wet-erase marker, or a permanent pen to add additional messages. Features - Color: Blue. - Material: Wood. - Size: 22 * 9cm (LxW). - Thickness: 0.5cm. - Blank ( Message) Door Sign Wooden Door Hanger. - and . - Tear-resistant wooden tags from door knobs - your message is hard to ignore! - Tags are made from thin wood and are reusable. - Fits right over a door knob. - Great for keeping family while you are crafting or napping. - Use with a grease pencil, dry-erase or wet-erase marker, or a permanent pen to add additional messages. Package list: 2 * Blank Two-sided Mini Wooden Blackboard Door Hanger Sign Warning Tag (Blue)