Graf Urban Cloche Cover designed for the Urban Balcony Raised Bed sold separately Item #645140. The clever protection and watering system of the transparent cover encourages growth and makes early harvesting possible. Safely protects plants from cold birds and other pests. The water collects in the shaped recesses of the cover and is gently released onto the plant below. In the event of heavy rain excess water runs off the sides of the raised bed. Made from UV-protected polypropylene. Made in Germany 5 year warranty.