Thermos Stainless King Flask Virtually unbreakable, dent resistant stainless steel body for ultimate performance Thermos double walled vacuum insulation Extreme temperature retention, keeps hot for up to 12 hours and cold for up to 24 hours Retro design for that classic touch. Capacity of 0.5L Retro design for that classic touch Box Contains 1 x Thermos Vacuum Insulated Flask, 0.5L, Midnight Blue