Confirmed fit
On-The-Fly Lock-Top 24 oz
Nalgene · On-The-Fly
Compatibility evidence details
Official Nalgene replacement-cap page documents this Wide Mouth or On-The-Fly compatibility; not a Narrow Mouth recommendation.
Concept illustration · Not a product photo
BOTTLE COMPATIBILITY
5 bottle modelsWhich bottles does this lid fit?
Verified bottle matches first. Always check model and generation.
Confirmed compatible
4 optionsManufacturer evidence ↗Source reviewed 2026-10-26View bottle details ↗
Confirmed fit
Wide Mouth 32 oz
Nalgene · Wide Mouth
Compatibility evidence details
Official Nalgene replacement-cap page documents this Wide Mouth or On-The-Fly compatibility; not a Narrow Mouth recommendation.
Confirmed fit
On-The-Fly Lock-Top 12 oz Kids
Nalgene · On-The-Fly
Compatibility evidence details
Exact official bottle: https://nalgene.com/product/12oz-kids-lock-top-bottle/; distinct factory model; see cap: https://nalgene.com/product/otf-cap/
Confirmed fit
On-The-Fly 32 oz
Nalgene · On-The-Fly
Compatibility evidence details
Exact sold 32oz bottle with OTF top, plus OTF cap size range.
Still under review
1 candidateThese are research leads, not approved fit recommendations. Check the exact model and generation before buying.
Not verified
Wide Mouth Ultralite 32 oz
Nalgene · Ultralite Wide Mouth
1 research record · Pending reviewView bottle details ↗ORIGINAL CONFIGURATION
3 documentedSold with these bottle configurations
Manufacturer-documented sales configurations; confirm the exact version you own.
On-The-Fly Lock-Top 24 oz
24oz On-The-Fly Lock-Top bottle with factory OTF Cap
Configuration notes
Manufacturer product expressly includes lock-top; relates to approved existing 24oz OTF complete-lid fit.
On-The-Fly 32 oz
32oz On-The-Fly Water Bottle with factory OTF Cap
Configuration notes
Direct 32oz official as-sold cap type; approved new complete-lid relation matches same source.
On-The-Fly Lock-Top 12 oz Kids
12oz Kids On-The-Fly with factory Lock Top closure
Configuration notes
Factory cap family only; cap color SKU and all historical generations not asserted.