We can’t recommend this! pokito has been designed as an alternative to the dreaded paper cups so it’s primarily for drinks whilst you’re “on the go”. It has a snap down lid which seals shut to prevent spills if you’re bumped on a crowded commuter train but it’s not a flask. There are great products out there which serve that purpose – they’re heavy and fairly expensive though. Once you’ve finished your drink, pokito seals tight to prevent any dregs leaking when it’s stored in your pocket or bag.