This product has a unique design that can convert this 720 ml insulated Bottle into a 540 ml insulated Tumbler & a 540 ml insulated Sipper by simply twisting the lid & replacing it with other lid to switch into a Bottle, Tumbler, or a Sipper as per convenience. This product comes with double wall vacumm insulation which makes it better at temperature retention in all three modes -Bottle, Sipper & Tumbler-for Both Hot & Cold Drinks.
