Flask with folding cup. Unique and iconic hip flask. Stainless steel. 7" .The Dalvey Flask sits at the heart of our range. Three decades ago the flask initiated our transition from a musical instrument manufactory to the design-led men’s accessories brand that we are today. Still manufactured to the same design, today’s Dalvey Flasks incorporate deep-engraved badges to give unparalleled richness and clarity.