This insulated BBQ blanket is made of waterproof Dupont paper, pearl cotton, and heat-reflective aluminum foil to lock in temperature and humidity for juicy, flavorful barbecue meat. Easy to use with a zipper design, it’s waterproof, reusable, and easy to clean. The large 21" × 15" × 8" size fits big cuts like brisket, pork shoulder, and turkey, perfect for grilling, smoking, picnics, camping, and parties.