Hydro Flask Standard Mouth Sport Cap

Hydro Flask Standard Mouth Sport Cap


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  • Compatible with all Standard Mouth bottles
  • Insulated for enhanced temperature protection
  • Quiet, "no whistle" valve
  • BPA-Free and Phthalate-Free
  • Hydro Flask Lifetime Warranty

Q: I see the product is covered under a lifetime warranty, how do I request that?

A: Do not send the item directly back to us, however simply complete the following form at 



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