Thermos Stainless King Flask Midnight Blue 470ml Our 470ml flask is ideal for busy lifestyles with a stainless steel interior and exterior making it more durable than glass-lined flasks whilst also being cool to touch when filled with hot liquid and sweat-proof when filled with cold liquid It features Thermos vacuum insulation technology, keeping liquids hot for 18 hours or cold for 24 hours With a twist and pour stopper that lets you pour without removing the stopper, and also including a stainless steel cup, it is perfect for a life on the move With a 50 year guarantee, this flask will be ready for your next adventure for years to come! Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.