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The dual-function lid is the real deal—switching from the soft straw to the wide-mouth chug spout mid-run takes zero effort. I’ve been using the straw for desk sipping all morning and the chug for post-workout refills; no leaks so far, and the 40oz size means I only fill it twice a day.

I was skeptical about the straw versus chug spout thing, but switching between them is actually seamless mid-hike, and the wide mouth is perfect for quick refills at the tap. Ice still floats around fine in the 40oz size, and the straw pulls smoothly without that annoying gurgle.

The wide-mouth chug spout is my go-to during workouts, and the soft straw is perfect for sipping at my desk. I've been reaching for this bottle constantly since it arrived, and the dual lid really does make it feel like two bottles in one.