Like all of Weber's charcoal barbecues, the lid and bowl are made of first-class, porcelain-enameled American steel. Weber barbecues have a particularly sturdy design which maintains its shape perfectly even at very high temperature. Even after 10 years, the lid and bowl will still seal properly, keeping the heat in the barbecue while you cook. This sets Weber barbecues apart from all non porcelain-enameled barbecues.
The sturdy design also means a Weber charcoal barbecue can stand outside all year round regardless of the weather. It's designed to handle these conditions so you can barbecue all year round.