I've destroyed every single thermos I ever had. After giving up on them for a while, it has come to my attention that my intestines require frequent watering not to tie themselves into knots. Drinking cold water all the time is even worse.

Hence, I need a thermos. But - it needs to be tough. Like, EDC tough. Any ideas?

P.S. Willing to pay about 20-25 USD w. shipping to Israel.