Selected food-grade stainless steel material, good insulation performance, corrosion resistance, the inner liner 316, outer liner 304 stainless steel, vacuum lasting insulation, and cold. Environmental protection paint cover, safety, and environmental protection, healthy drinking water. The cup body is small, can be put into a small bag, the volume is equivalent to the size of a mobile phone, portable, and does not take up space. Measuring 5.5*2.1 inches, this custom woodgrain mini portable insulated bottle 6oz. 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.