But it’s not insulated, so it won’t keep your water cold, and it takes up as much room as an insulated steel bottle. Takeya 24oz Tritan Water Bottle: This is a version of our attached-cap pick ...

You have to squeeze it to release water, making it spill-proof. The Tritan has been Nalgene’s best-selling water bottle for over three decades, evoking nostalgia with its iconic design.