This thick iron plate, made of black iron, can be used outdoors. The possibilities are endless, and it can be used for solo camping, mountain climbing, and more. Features: Once the iron plate is heated, even on low heat, the heat retention and radiant heat of the plate will cook the food thoroughly. Thin iron plates have poor heat retention, so you need to use high heat to cook food. As a result, the surface of the food burns before the inside is cooked. The heat retention of 4.5mm, 6mm, or 9mm thick plates is considerable.