This 12oz Campfire Mugs are made of quality steel coated with thick enamel. Unlike plastic or glass mugs, this is free from any toxic substances to make sure healthy and safe for daily use. It is very durable and eco-friendly. Great for hot chocolate, coffee, milk, soup, fruits, and event snacks. Can be heated in oven, open fire, induction cooker or electric stove except microwave, Hand wash recommended. Great for indoor and outdoor use like backyard BBQ, camping, fishing, travel. It has a very rustic and vintage vibe to it. A cool gift to family or friends.