Nalgene Bottle Review: OTF Model

nalgene bottle review

Everyone loves a good water bottle that’s built to last and doesn’t leak. This post is going to review a bottle from one of the largest water bottle manufacturers – Nalgene. Our Nalgene bottle review is going to cover their On The Fly (OTF) model which is built for convenience and durability.

The Company – Nalgene


First off, let’s talk about the company. Nalgene makes a wide range of BPA free reusable water bottles, storage containers, drinkware, etc. For those that aren’t aware, BPA stand for bisphenol A which is an industrial chemical used to make certain plastics and resins. In the case of a water bottle, over time BPA can seep into your beverage and has been linked to cause some serious health affects. To stay on the safe side, choosing to go BPA free is a smart choice.

Nalgene strives to help reduce the world’s carbon footprint by manufacturing and selling these bottles allowing people to reuse them instead of buying plastic bottles that will soon be thrown away.

Not so fun fact:

More than 60 million plastic bottles end up in incinarators and landfills every day. –

That’s a lot of plastic!

Nalgene’s mission to reduce the amount of plastic in our landfills is a positive move forward to helping improve the environment.

What Is The OTF Bottle Made of?

The OTF water bottle is made of a Easman TritanTM Copolyester – a BPA free material. According to Eastman, their copolyester is “Better than glass. Better than stainless. Better than any other plastic.” As for manufacturing, the bottle itself is made in the USA while the cap is made in China.

Nalgene’s eco-friendly instincts took it a step further and also used EarthFirst PLA film (made from plants) for the bottle’s shrink sleeve as can be seen in the image below.



Nalgene OTF Bottle Features

The Nalgene OTF water bottle’s features include:

  • Dishwasher safe
  • BPA free
  • One handed operation
  • Bottle closure lock
  • Push button to open closure
  • Can hold 22oz or 650ml
  • Doesn’t retain odor

The one-handed operation makes this bottle very easy to handle wether you are doing an activity such as biking, are on the road, or “on the fly” in general. Here are a few shots of what the various parts of the bottle look like.

Nalgene OTF bottle closure open

nalgene bottle closure open

Nalgene OTF bottle closure off

nalgene bottle closure off

Nalgene OTF bottle closure

nalgene bottle closure

Nalgene OTF bottle closure lock

nalgene closure lock

Nalgene OTF bottle in-hand

nalgene bottle in hand

Nalgene Bottle Review – In Summary

In summary, this bottle seems to be very sturdy, leak-proof, easy to clean, easy to use, and doesn’t leave any strange odor or flavour from the plastic. I’ve had this water bottle for a few weeks now and overall it seems to be quite solid. A few things I should mention is that the cap itself seems to have a couple of flaws. The closure part of the bottle does have a little bit of flex to it. Therefore when closing it via the closure, it doesn’t always line up with the lock which I find to be a minor annoyance. The closure also seals quite tight, which overall is great since it does not let any water escape, however this may also make it a little cumbersome for some to close it when only using one hand.

These minor flaws in my opinion are nothing that would push me away from purchasing this water bottle. Although perhaps something that warrants a little more concern is the discussion of black specs forming inside the rubber stopper after a certain period of time. I have not first handedly experienced this issue yet. However, other buyers have experienced this issue and it turns out that the black specs are in fact mold which forms when the cap does not dry out between washings.

Important Note: To help prevent the formation of black mold within the rubber stopper, Nalgene recommends the following:

Wash the bottle and cap well, either by hand or placed on the top rack of the dish washer away from any heating elements with the cap off and opened.  Let the cap dry out completely.  Store with either the cap on the bottle but in the opened position, or separately from the bottle, also in the opened position.  This will greatly help eliminate the formation of mold. 

Personally, I have not seen this issue as of yet, however I plan to do a 6 month update post on the bottle to see if I too experience black mold forming within the rubber stopper. Overall, the bottle performs well and accomplishes what it sets out to do. Based on my experience so far with the Nalgene OTF water bottle, I would certainly recommend it to anyone in need of a reusable bottle wether for hiking, camping, or just for day-today use.

If anyone has any questions they want to ask about this Nalgene bottle review, or if you have any experience with the OTF bottle you’d like to share, please let me know in the comments section.

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Nalgene Bottle: OTF Model

Nalgene Bottle: OTF Model








        • BPA free
        • Dishwasher safe
        • No odor or flavour from plastic
        • Convenient size and comes with liquid measurements on side of bottle
        • Leak-Proof


        • Possibility of mold forming inside the cap (haven't experienced this yet)
        • Closure is a bit hard to seal when using one hand
        • Closure can shift from left to right which sometimes prevents it from lining up correctly
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        • Mary Ehresman

          I love my OTF Nalgene, but I do have the black mold problem on the stopper. Any thoughts on that?

          • I’m not sure if you can get rid of the mold once it’s there, but I’ve outlined a few things within the article that you can do to help prevent the mold from occurring. I’ve had my Nalgene OTF bottle for over a year and a half and use it everyday. Still no mold has showed up.

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