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The flip mechanism is so smooth that I can pop it open one-handed while carrying my bag in the other—exactly what I needed for my commute. It’s stayed completely leakproof in my tote all week, not a single drop.

I was skeptical about another straw lid, but this one’s leakproof seal has survived my bag getting tossed around daily. The upright drinking position is so much easier than tilting my head back, and it snaps shut with a satisfying click.

I've been carrying this everywhere since it arrived, and the fact that it stays completely leakproof when flipped shut means I can just toss it in my bag without a second thought. Flipping it open one-handed while walking the dog or typing an email is effortless. Honestly, it's made my coffee runs a