Thermos 16 Oz Icon Series Vacuum Insulated Stainless Steel Travel Mug features durable, double wall stainless steel construction with an ergonomically-designed handle that is comfortable to grip. Thermos vacuum insulation technology will keep your hot drinks hot for up to 7 hours and your cold drinks cold for up to 18 hours. High quality 18/8 stainless steel construction is dependable any time of the year for long treks or road trip.