ISO: leakproof waterbottle that looks good in court

Hi everyone, happy to have found this sub!

I’m looking for a water bottle that works for court and office days and I hope someone can save me the time and money of buying and trying several.

Must haves: - leakproof! I need to be able to throw it into a leather court bag or backpack with zero leakage - court appropriate! It can have a bit of color to it but I can’t be doing neon green or wacky patterns. It also cannot be glass. - keeps water cold for a full day - holds at least 24oz of water

Any recommendations for me?? Thanks!