Thermos Direct Drink Flask, Stainless Steel, 470 ml. Thermos vacuum insulation technology for maximum temperature retention hot or cold; keeps hot for 10 hours and cold for 24 hours. Durable stainless steel interior and exterior. Cool to the touch with hot liquids, sweat-proof with cold. Light and compact design for easy transportation and storage featuring an easy to open push-button lid. 5 year guarantee. Designed with travel in mind, this lightweight yet durable flask is ideal for everyday use for people on the go, in 4 vibrant colour options. Fits most vehicle cup holders.