1.Our coffee cups are made of stainless steel. They have smooth mirror surfaces and brushed interiors. 2. The elegant design and double wall structure make hot and cold things longer than ceramic cups. The beverage remains hot, and it will also get hot outdoors, but it won't be too hot. 3. The double walls make it lightweight, very sturdy, and can withstand falls without being crushed. It is also more durable than those plastic versions. 4. Suitable for adult use. Suitable for tea/coffee, milk, cold and hot beverages. Lightweight camping and picnic cup. 5. Suitable for car cup holders, convenient to carry your favorite drinks Material: stainless steelDimensions: small size -8 * 7cm, medium size -9 * 7.5cm, large size - 10.5 * 8cmWeight: small size -107g, medium size -130g, large size -162gCapacity: small size -210ml, medium size -280ml, large size -400ml 1. Our coffee cups are made of stainless steel. They have a smooth mirror finish and a brushed interior. 2. The elegant design and double wall construction keeps hot stuff and cold stuff longer than ceramic cups. The drink stays hot and the outdoor gets hot but not too hot. 3. The double walls make it light weight and quite sturdy to withstand drops but not being run over. It is also more durable than those plastic versions. 4. Suitable for adult use. Suitable for tea/coffee, milk, cold and hot beverages. Top quality lightweight camping and picnic mug.