This custom tumbler is beautifully shaped, adorable designed with five colors. The outer material is 201 stainless steel, the inner material is 316 stainless steel, the cover material is PP plastic, healthy and durable. It's long-term thermal insulation, anti-scalding, anti-leakage, anti-corrosion, anti-mildew. You can use it to hold hot or cold drinks, such as coffee, milk, juice, beer, etc. Portable belt design, easy to carry
