Our new top-performance stainless steel flask will impress the user with its excellent thermal properties.This is due to the new press-pour valve with inside threading and the double-walled, high-vacuum, insulated stainless steel body. Your drink will remain either hot for 12 hours or cold for 24 hours, depending on usage.The outer material is spring steel to prevent denting. A rubberised underside makes the flask stable on every surface.