French designer Aurélien Barbry's Sky Thermo Cup in rose stainless steel seamlessly combines aesthetics with functionality. Its distinctive asymmetrical exterior is complemented by practical features for on-the-go use, including double vacuum layer walls that keep drinks warm for up to three hours, from boiling point to 60°C / 140°F. The leak-proof lid has a convenient push closure, which can be easily unscrewed for thorough cleaning. Hand-washing is recommended. The cup is also designed to fit all standard cup holders.