With the convenient, one-handed Nalgene On-the-Fly Cap , you don't always have to drop everything to take a sip. The leak-proof cap is ideal for messenger bags, gym bags and backpacks - all without worrying about getting your gear wet.The water bottle lid fits Nalgene Wide Mouth water bottles

Lock-top. Pop-top. One-handed sipping On-The-Fly

Suits Nalgene Wide Mouth Bottles 1.0L & 1.5L

• BPA/BPS Free

  So you can drink water that's safe and tastes great.

• Built to Last

  Our durable goods are made to last a lifetime.

• Dishwasher Safe

  Safe to put in the dishwasher and easy to clean.

• Leak-Proof Guarantee

  Continuous, straight shouldered semi-buttress threads keep the bottle sealed tight.