Coronavirus Covid-19 Gloves Must be Worn A2 Corriboard Sign. Signage solutions can help prevent the spread of Coronavirus Covid-19. Suitable for use on indoor or outdoor. Excellent awareness solution for shops, restaurants, warehouses and many more. Range of Sizes available.. Signs are available in a wide range of sizes and materials and are suitable for long term outdoor use. Don’t see the sign or size you are looking for? You can call us on 025-31212 or email firstname.lastname@example.org to discuss your requirements. Discounts Available on Bulk Orders.