Lemonade in funtainer?

[KpbS]

Do you put lemonade or other acidic beverages inside a Thermos funtainer? I'd like to send lemonade this year for DC's lunches, but am a bit stumped as to what to send it in. I'm not sure about the stainless steel.

[TwinFoxes]

I'm pretty sure the label specifically says not to put acidic or carbonated beverages in a thermos.

[KpbS]

Makes sense, thank you! I haven't bought a new one in a long time as we have a good collection of them. I'll check out waterbottles (plastic) at Target.