Confirmed fit
Lightweight 16 oz
Hydro Flask · Lightweight Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Concept illustration · Not a product photo
Hydro Flask / REPLACEMENT PARTProduct source ↗
Wide Mouth Flex Cap
Replacement lid details
BrandHydro Flask
BOTTLE COMPATIBILITY
7 bottle modelsWhich bottles does this lid fit?
Verified bottle matches first. Always check model and generation.
Confirmed compatible
7 optionsManufacturer evidence ↗Source reviewed 2026-10-26View bottle details ↗
Confirmed fit
Lightweight 24 oz
Hydro Flask · Lightweight Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Confirmed fit
Lightweight 32 oz
Hydro Flask · Lightweight Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Confirmed fit
Lightweight 40 oz
Hydro Flask · Lightweight Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Confirmed fit
Wide Mouth 24 oz
Hydro Flask · Wide Mouth Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Confirmed fit
Wide Mouth 32 oz
Hydro Flask · Wide Mouth
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
Confirmed fit
Wide Mouth 40 oz
Hydro Flask · Wide Mouth Bottle
Compatibility evidence details
Hydro Flask chart confirms this Wide Mouth or Lightweight bottle accepts Wide Mouth caps.
ORIGINAL CONFIGURATION
1 documentedSold with these bottle configurations
Manufacturer-documented sales configurations; confirm the exact version you own.
Wide Mouth 32 oz
32 oz Wide Mouth Bottle (standard Flex Cap configuration)
Configuration notes
The catalog separately lists a plain 32 oz Wide Mouth Bottle and 32 oz bottles with Flex Straw or Flex Chug caps. Treat this mapping as the standard bottle configuration only; confirm exact purchased variant.