This 20OZ/31OZ-Stainless Steel Vacuum Insulated Tumbler-With straw vacuum lock temperature, 6h insulation and cold, vacuum layer link inside and outside the heat transfer, 600ml/890ml two specifications to meet the office, fitness, driving water needs, threaded lid, food-grade PP, cup mouth round and smooth, straw design for easy drinking.Keeps your dinnertime drink cool well past sundown or your coffee nice and hot throughout the morning This custom 20oz/31oz-stainless steel vacuum insulated tumbler-with straw. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. We offer logo printing and full packaging customization. Product Highlights: BPA-free, leak-proof, travel-friendly.