This is an excellent grill cover with lots of features. The material is a very thick and sturdy waterproof fabric with rubber lining to keep your grill totally dry during wet weather. There is double stitching used throughout to keep the seams secure. There is a bungee drawstring at the bottom to cinch the cover into place, so it won't fly off even in the windiest weather. Love this cover, as it fits the contours of the Masterbuilt gravity grill so perfectly! Highly recommended to buy this cover to protect your investment and keep it looking new for years to come.