ビドン

The 500ml size fits perfectly in my backpack's side pocket, and I love that I can just squeeze it to get the right amount of water without unscrewing anything. The flying fish design gets compliments at the gym too.

The flying fish pattern makes me smile every time I grab it, and the push-to-drink top means no unscrewing when I'm mid-workout. It's 500ml, so I refill once during a long hike and that's it.

The 500ml size fits perfectly in my bag and the flying fish pattern gets compliments every time. I like that it stays ready to use in the open position, so one squeeze gives me just the right amount.