$16.99
The Hydro Flask Standard Mouth Sports Cap is an insulated bottle cap that keeps water in your Hydro Flask bottle ice cold and lets you hydrate one-handed and on the fly.
It features:
Insulation for enhanced temperature protection
Quiet, no whistle valve
Compatibility with all Standard Mouth bottles
BPA-free and phthalate-free materials.
Please note that this cap is NOT intended for use with hot liquids and is not leak-proof.
