My Frank doesn’t leak if I treat it nicely, keep it upright etc.
But I found an old Tupperware cup that functions more like a thermos with screw down lid. I can chuck that thing in my backpack and trust it to remain hot and not leak for hours. So maybe narrow your search to small thermos’s.
My gf got me a custom-printed Frank cup and it’s super pretty but it’s leaked since day 1 and the lid is a nightmare to take apart and clean properly. They do appear to be selling non-seal sippy lids now though so I might just order one of those to get some use out of it.
My Frank doesn’t leak if I treat it nicely, keep it upright etc. But I found an old Tupperware cup that functions more like a thermos with screw down lid. I can chuck that thing in my backpack and trust it to remain hot and not leak for hours. So maybe narrow your search to small thermos’s.
My gf got me a custom-printed Frank cup and it’s super pretty but it’s leaked since day 1 and the lid is a nightmare to take apart and clean properly. They do appear to be selling non-seal sippy lids now though so I might just order one of those to get some use out of it.