Our wide mouth 20 oz stainless steel bottle is perfect for keeping everything cool or hot. The stylish and durable design is engineered to keep drinks cold for 24 hours and hot for 12, with double wall vacuum insulation for maximum temperature retention. This item does not contain any BPA, phthalates, lead, or other harmful chemicals. Constructed of food-grade materials that have been FDA-approved and passed California Proposition 65.