Thank you for viewing. This is perfect for outdoor activities like picnics, or even indoors at the office. It's the size of a PET bottle, so it fits in a car's cup holder. ● Vacuum double-walled bottle ● Approximately 21.8cm high x 7.1cm diameter, capacity approximately 350ml ● Stainless steel ● Heat retention: 63°C or higher after 6 hours ● Cold retention: 8°C or lower after 6 hours ● Notes: Not dishwasher or microwave safe