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Medium was the right call for everyday carry, it slips into my tote without hogging space. The size feels practical for running errands and it's held up fine so far.

The medium size fits perfectly in my car's cup holder, which was my main worry before ordering. Feels sturdy and the lid screws on tight with no leaks so far.

Took this on a weekend trip and the medium size slipped right into my tote without bulging. Lid stays secure even when tossed around, which is exactly what I need for commutes.