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.
