The Everdure Grills by Heston Blumenthal Long Grill Cover for the Everdure FURNACE Propane Grill is designed to protect your portable charcoal grill from the elements.IoT-powered.Live chat. The waterproof lining on this cover will ensure that your grill remains nice and dry. This cover is made of black heavy duty UV protected material for extra heft and Velcro straps for keeping your grill secure and enhancing overall reliability.