Ther 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. The large mouth makes it easy to add ice cubes or citrus slices. There are several colors to choose from. The water bottle's diameter is under 3 inches, so it will fit in virtually any car's cup holder. 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.