Made of stainless steel with heat insulation and heat preservation, sturdy and resistant, comfortable to the touch, 304 stainless steel liner, giving better heat preservation performance and stable practicality, long-lasting heat preservation and cooling. Sealed structure design, 360? inverted without water leakage. Polished, rounded and smooth, tightly fastened, not easy to leak water. The appearance is simple and uncomplicated, supporting customised logos and colours. In addition environmental protection is one of the biggest advantages of stainless steel mugs, because when we use stainless steel mugs, it reduces plastic pollution; when not using stainless steel mugs it can also be recycled. Measuring 8.27*2.76 inches, this custom 16oz stainless steel gradient portable insulated mug. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: BPA-free, leak-proof, travel-friendly.