زجاجة ماء ميونخ

The 550 ml size fits perfectly in my bag's side pocket without sweating through my notebook. I like that it stays ready to drink from the open position, no cap to unscrew every time.

Press the top and you get water, let go and it seals — I didn't expect to like that mechanism as much as I do. It's been living on my desk all week and I haven't had a single leak in my bag yet.

The 550 ml size fits perfectly in my bike's bottle cage, and I love that I can just squeeze it instead of unscrewing a cap every time. The Munich design is a nice touch too, and it hasn't leaked once in my bag.