This A4 Window Message Chalkboard with Suction Cups is great for indoor or outdoor use and easy to install, these boards are ideal for cafes, bars or restaurants. Special offers and promotions can be quickly changed. Draw in more potential customers and increase brand awareness. Made from 3mm black acrylic with smooth satin finish is reversible. Suitable for liquid chalk pens only its easy to clean with an anti-glare re-writable surface. Ideal for both indoor and outdoor use. Portrait or landscape use. Supplied with 4 suction cups.