
Made in the USA
Fits the 32 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 10.1 g and it's made in the USA.
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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.

| 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.

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.
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.







