Clay chimeneas can crack is they become too wet or if it freezes when they are wet. So the use of the Gardeco cover will prevent the chimenea from getting wet, and therefore protect them from rain or frost or damage. Cast iron or steel chimeneas will rust if left outside all year. Help prevent rusting by covering them when not in use. Made of woven polypropylene which is UV and tear-resistant, all Gardeco covers are supplied with strong brass eyelets and tie-string. Practical and long-lasting. Fits the Cradle with a Large Chimenea.