Enjoy your favourite beverage all day long with Smash thermal flask Design to keep contents hot or cold for hours. For best results, preheat the flask by filling with boiling water or pre cool by filling with ice to pre heat or chill flask. Leave for 5 minutes then fill with your chosen beverage. Perfect for taking hot drinks such as coffee tea, hot chocolate or soups to work or the weekend sports Easy Pour 360 degree stopper Made from Dual Wall Vacuum Insulated Stainless Steel