Cast iron for fast, even heat distribution and retention. Pre-seasoned and ready to use. Ideal for Panini sandwiches, steaks, burgers, chops, fish, bacon, sausages, quesadillas, grilled cheese and more! Raised ridges leave perfect grill marks and allow fats to drain into the grooves. Outdoor and indoor use. Recipes and instructions included Pan measures 6-inch/15 cm diameter and handle is 4. 5-inch/11. 5cm Hand wash, rinse thoroughly and dry. Never soak cast iron.