Material: Our coffee mugs are made of food grade stainless steel. They have a smooth mirror finish on the surface and a brushed finish on the inside. Easy to clean and dishwasher safe. Double Wall Design: Not only the cup body, but also the cover is double-layer. These keep coffee warmer longer than a conventional ceramic cup. Lightweight and Durable: Double-walled makes it lightweight and reasonably sturdy. Welded handle will stay solidly attached. This stainless steel mug is great for picnic and camping! Splash Proof Lid: This lid can prevent the splash but not the spill (the liquid will leak if you turn over the coffee cup). Awesome for your next cup of coffee or tea. Maximum Capacity: 13.5oz/400ml. Recommend Use Capacity: About 11.8oz/350ml. Perfect for using for tea/coffee, milk, cold and hot drink. Bottom Diameter: 3.1inch/8cm; Height: 4.7inch/12cm. Weight: 0.54lb/246g. Features: - Made of high quality stainless teel, our coffe mug is very sturdy and durable, long-serving life. - Double wall stainless steel insulated mug keep coffee warm better than a regular coffee cup. - The thick rim with no burrs and rough spots, smooth and cambered rim wont hurt your mouth. - Lightweight but sturdy, perfect for backpacking, camping, fishing, or any other traveling and outdoor activities. Product Specification: - Material: Stainless steel Color: silver - Product Size: Bottom Diameter: 3.1inch/8cm; Height: 4.7inch/12cm. - Weight: 0.54lb/246g. Package List: - 1 x Coffee Mug