The 28 oz Stainless Steel Insulated bottle is made of 316 stainless steel with a powder-coated matte finish. The wide-mouth lid is BPA-free and with double insulation to keep beverages hot for up to 12 hours and cold for up to 24 hours. Recommended hand wash only and should not be put in the microwave or freezer. Measuring 28OZ, this custom large capacity 28oz stainless steel insulated bottle. 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.