Cap Strap for 16 oz wide mouth Nalgene, black ring with green strapCap Strap for 16 oz wide mouth Nalgene, black ring with green strap
Cap Strap for 16 oz wide mouth Nalgene, green ring with blue strapCap Strap for 16 oz wide mouth Nalgene, green ring with blue strap
Cap Strap for 16 oz wide mouth Nalgene, red ring with yellow strapCap Strap for 16 oz wide mouth Nalgene, red ring with yellow strap
Cap Strap for 16 oz wide mouth Nalgene, white ring with purple strapCap Strap for 16 oz wide mouth Nalgene, white ring with purple strap
Cap Strap on a 16 oz wide mouth Nalgene with a red carabiner clipped through the main loopCap Strap on a 16 oz wide mouth Nalgene with a red carabiner clipped through the main loop
Cap Strap for 16 oz wide mouth Nalgene, black ring with green strap
Cap Strap for 16 oz wide mouth Nalgene, green ring with blue strap
Cap Strap for 16 oz wide mouth Nalgene, red ring with yellow strap
Cap Strap for 16 oz wide mouth Nalgene, white ring with purple strap
Cap Strap on a 16 oz wide mouth Nalgene with a red carabiner clipped through the main loop

Made in the USA

16oz Wide Mouth Cap Strap

$19.95
Shipping calculated at checkout.
336 reviews

Fits the 16 oz wide mouth Nalgene. The powder-coated aluminum ring screws onto the bottle's threads and seats under the cap, which closes and seals the same as before.

There's one main loop for a carabiner or rope and two smaller ones for a lanyard or tether. It weighs 9.3 g and it's made in the USA.

Color: Black/Green
Color: Black/Green

Product information

A powder-coated aluminum ring with 1-inch webbing and bar-tack stitching. There's one main loop for a carabiner or rope and two smaller ones for a lanyard or tether. It weighs 8.5 to 10.1 g depending on size, and it's made in the USA.

Orders over $40 ship free in the US. International shipping is calculated by our export partner and includes duties and import fees.

30-day returns: you have 30 days after receiving your order to request a return. See our refund policy for the details.

There are three versions. Find your bottle below. The Cap Strap screws onto the threads and seats just under the cap.

Which Cap Strap fits which Nalgene bottle

Your bottle Your Cap Strap
Nalgene 32 oz Wide Mouth 32oz Wide Mouth Cap Strap
Nalgene 16 oz Wide Mouth 16oz Wide Mouth Cap Strap
Nalgene 32 oz Narrow Mouth Narrow Mouth Cap Strap
Nalgene 16 oz Narrow Mouth Narrow Mouth Cap Strap

Not compatible

48 oz and Ultralite bottles. The gap between the cap and the bottle's lower flange is too narrow on these, so the Cap Strap stops the bottle from sealing.

Not a Nalgene?

Many bottles share Nalgene's thread pattern. If there's a few millimetres of space between the cap and the flange below it, a Cap Strap will likely fit. If you're not sure, send us a photo.

  • 5 stars: 300 (89%)
  • 4 stars: 24 (7%)
  • 3 stars: 8 (2%)
  • 2 stars: 1 (0%)
  • 1 star: 3 (1%)
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
C
Callan Hyatt
From Kayaks to High Rise

I've owned my 32oz wide-mouth cap strap for roughly a year now, and other than a few paint chips, it's held up really well! Besides being great for securing to my kayak, I also use it at work often as a high-rise window cleaner. It's super handy when I'm hanging from ropes all day and need a quick drink.

K
Kevin
Great Nalgene holder!

I've been using a narrow mouth Nalgene for my daily water since 2009 with a typical cloth band around the waist. Switching to this strap is definitely an upgrade, the bottle hangs from the carabiner better, knocks around less, and is less cumbersome. I also braided paracord on the eyes to make a handle/hanger for the bottle in addition to the carabiner. I am very satisfied and wish I had found this years ago.

B
Brian Olson
Solid piece of metal!

Screws right on. Multiple attachment holes for hanging other things. Carabineer that thing to your bag. This isn't going to break!

A
Alan
I know you are thinking it is expensive

I thought so at first too, but I've picked these up for my at home and work water bottles. It is a well thought out, and quality built product that makes it easy to strap it to your belt or bag all while being minimally invasive. My only critique would be the carabiner they sell is a little small for my liking, but I'm sure you've got a spare gear clip somewhere you can use.

T
Tiago Alcaraz
Tahr Equipment Nalgene Wide Mouth Cap Strap

The Cap Strap is amazing from the build quality to practicality of it, it allows me to attach my Nalgene to me more securely than ever before. Hands down one of the best purchases I have made this year.

L
Lee
Usable connectors with personality quirks

I bought around four of these seconds for our Nalgened. Our scouts camp often, and we have had multiple plastic lid straps break. These Tahr metal and webbing straps take a beating and work well with a carabiner to strap the water bottle ro bags, chairs, and pants. Most of the 2nd Tahr straps have minor paint or little metal flubs, one is bent a bit and took a little help to get round on the bottle lid... they all work fine otherwise.

B
Brent Foucht
I need more!

This is a great addition to a Nalgene! Biggest issue is… I have a small collection of Nalgene so now I need more cap straps!

J
John Cruz
Great for backpacking

I grabbed one to hold my water bottle with the lid off while filtering water. Works great, got my friend one too.

R
Rachael Kuehl
Works great!

I love this product. Not having a strap on my water bottle was driving me crazy. I was worried my bottle would leak since this product goes where the cap screws on, but that is not the case.

D
Don Ludlow
Paddling the Rideau

I just finished the best paddle up the Rideau Canal. The cap strap made my water secure in the boat. Thanks for making a great product!

J
Jeff Hoffman
Excellent product!

I love my Tahr Equipment strap w/carabiner for both my wide and narrow mouth Nalgene bottles. I find the product to be an excellent companion for my bottles whether at work in my patrol car or hiking in the mountains. Simple, yet perfect!

C
C.
Absolutely would recommend!

Bought one of these after my raft guide showed me his, and it’s everything I was looking for! The strap is durable and has made it through many canoe and kayak trips, backpacking trips, and gets constant compliments. The picture I’ve attached is of my old and faithful Alpinecho customized 32 oz Nalgene and a Camnal Screw Lock Carabiner. This combo is amazing !

A
Andrew Clarke
Excellent Products

Ordered the 32 and 16oz Wide-Mouth units.
Excellent anodizing on the aluminum ring, and heavy stitching on the nylon webbing.

K
Kasey C Carter
Long Term Solution

Didn’t realize such a small change would make such a big improvement. Will never have to worry about my lid strap breaking again - especially when on the trail.

S
Sarah Chekroun
Super Awesome!

Cap straps saved the day on my 8 day river trip in the Grand Canyon!

D
Dennis Robertson
Cap Strap

I like the Cap Strap for holding my Nalgene. It kind of feels like a quickdraw when in hand.

N
Nick LeFort
A decades old problem - SOLVED!

Well done. Well done indeed! No more snapping collars on the trail = no more losing my sticker collection!

D
David Graham
Great little holder

Like this idea and waited for the norrow mouth and it finally has arrived. I have no complaints and the color options are plentiful.

N
Nicholas Burgeson
Fits 48oz wide mouth if you modify the lid

Amazing product. I strictly use 48oz bottles so I knew I was going to have to make some modifications to my bottle when I ordered. I took a piece of sandpaper and put it flat on a table and sanded down the bottom of my cap until the little perforations were gone. Took about 5 minutes and now it fits my 48oz bottle

D
David Tilley
Great accessory for Nalgene!

It’s a little pricey for what it is but overall I love it! Super convenient to have a strong and reliable place to snatch my bottle up and being able to clip it onto my belt and keep my hands free without worrying about a broken plastic cap strap is a huge plus! Would gladly buy again but feels well made enough that I won’t have to unless I get another bottle! Highly recommend!

N
Nathan Slicer
I love this product

Me and my wife have been hiking for about 4 years now, and I always bring enough resources to make sure if something bad happens, we'll be alright. But sometimes we like to do shorter hikes where I don't want to bring a backpack. The cap strap solved the issue of bringing ample water and first aid equipment by allowing my to bring the bare bones on the cap strap and a sling. It's so nice to do short hikes without having to wear a whole backpack. Keep up the good work on these!!

K
Katharine Clemow
Yes, you do need one more piece of gear

I know there are a lot of new products dropping all the time and it can be hard to decide what's worth spending your hard-earned cash on. I'm a firm believer in not skimping on safety gear, and when an item arrives quickly and functions exactly as promised, I sure do like to tell my friends! This cap strap does everything it says it does, including staying secure as well as out of the way. So, if you're on the fence about this product, let me help you out- just buy one. Or two. I bought three, but it's not a competition.

J
Joshua Gregory
Innovative AF

Saw a instagram ad for the strap about a month ago and looking back on my Nalgene that broke on me during a field op, I decided to buy it. Bought a sticker with the strap too a little on the larger size but good quality(would love to see a sticker with just the goat head). Got to test out the strap on two camping trips and I was not gentle with it to test the durability. It held up just fine, all expect for a slight bend where the strap secured to the metal. As long as you’re not trying to break this thing I don’t think there should be any issue. Will definitely be taking this thing to work with me. Awesome product, definitely gonna buy another. Would love to see higher grade metal down the road eventually.

Chart: Cap Strap fits 32 oz and 16 oz narrow mouth and wide mouth Nalgene bottles; not 48 oz, Ultralite or metal bottles

Fit guide

Which Cap Strap fits my bottle?

Three versions: 32 oz wide mouth, 16 oz wide mouth, and narrow mouth (fits the 32 oz and 16 oz). The 48 oz and Ultralite bottles aren't compatible. The gap under the cap is too narrow to seal.

See the full fit guide

QUESTIONS, ANSWERED

Why wouldn't I just use the plastic loop on my Nalgene?

The plastic loop exists to keep the lid attached. It was never built to carry a full bottle. Hang a liter of water from it long enough and it stretches, then snaps. On a sidewalk that's a scuff. On a river it's a lost bottle.

The Cap Strap uses an aluminum ring, bar-tack stitching, and 1-inch webbing so you can take your bottle with you, wherever you go.

Will it fit my bottle?

It screws onto the threads and seats under the cap, so it needs a few millimetres of space between the cap and the bottle's lower flange. Nalgene 32 oz wide mouth, 16 oz wide mouth, 32 oz narrow mouth, and 16 oz narrow mouth all work. The 48 oz and Ultralite bottles don't. The gap is too narrow and the bottle won't seal. Full fit guide here.

How is shipping calculated?

Orders over $40 ship free in the US. International shipping is calculated by our export partner and includes shipping plus any duties or import fees.

What's your return policy?

30 days. You have 30 days after receiving your order to request a return. Terms are here, and you can start a return from your account.

Is there a warranty?

It should outlast the bottle. If it doesn't, email a photo to info@tahrequipment.com.