Weber Premium Cover for Weber Performer GBS 57cm. The new and durable Weber Premium covers are made of high quality, breathable and durable material that provides adequate protection against all weather conditions. The toppings are rain repellent, avoids soaking, plus they include UV-resistant, thus, they will withstand harsh sunlight. In addition, they have Velcro straps provide a secure grip even in high winds. For Performer Premium and Deluxe 57cm grills