Thank you for viewing. This is an unused sowden bottle, 0.35L. It's a slim bottle with a high design quality. It has a rubber base for a non-slip effect and comes in a sturdy cylindrical box. From the HAY official website: This bottle series, designed by George Sowden, features playful, contrasting colors. In addition to its unique design, it also has heat and cold retention functions. Heat retention: 80°C or higher / 6 hours Product size: Diameter 7 x Height 20.5 cm Material: Stainless steel Please feel free to contact me if you have any questions.