Although cushion boxes by nature are repellent to the elements, for optimal care and longevity from the ravages of prolonged moisture and frost exposure it’s a good idea to cover this storage box with the specific fitting protective cover, made from durable EVA coated polyester.Key features: Lightweight – quick and easy to cover up or remove. Protects from UV, frost, tree sap and bird droppings. Tailored fit with pull cords, keeping the cover secure Side vents to allow air flowFor use with the: Kettler Palma Cushion Box