I am really happy with this cover. It fits like a glove and is made of heavy durable material that is most certainly waterproof. This cover has protected my Masterbuilt Gravity Series 1050 through 2 storms now, and the grill has remained completely dry! It also has 2 drawstrings on the bottom, one in front and one in back. You can cinch down the drawstrings and no amount of wind will blow this cover off...excellent idea, Masterbuilt!