Product #: SFX001
Strong, flexible, and portable! The stainless-steel pivot construction with an easy-to-carry strap makes the Hydro Flask Standard Mouth Flex Cap a perfect companion for the outdoors.
Best paired with any of the standard mouth bottles, this flex cap offers all-day hydration with long-term insulation.
- Honeycomb Insulation keep your drinks cold for up to 24 hours or hot up to 12.