Most people underdrink not from lack of intent but from lack of feedback. The time markings along the bottle turn a vague goal into a visible one — you can see at a glance whether you're on pace or three hours behind, which is what actually changes the habit.
The built-in straw means you can drink without tipping the bottle, useful while driving, at a desk, or mid-hike. The locking flip cover keeps the mouthpiece clean in a bag and prevents the lid popping open in transit.
Leak-proof enough to toss in a backpack, and sized for a full day rather than a single session. A straightforward tool for anyone trying to build a consistent hydration habit rather than remembering after the fact.