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Hydro Flask Insulated Wide Mouth Flat Cap - Wide Mouth

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Price:$3.99

Subtotal:$3.99

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Designed for everyday use, as well as the rigors of the outdoors, our Wide Mouth Flat Caps are insulated to aide in keeping your Hydro Flask contents cold or hot and at the optimal temperature.

The Wide Mouth Flat Cap fits our wide 18 oz, 32 oz, 40 oz and 64 oz Wide Mouth Hydro Flasks. Please note that the Insulated Flat Cap does not fit on the older style Wide Mouth flasks. To find out which style flask you have and whether the Hydro Straw Lid will fit yours, check out the Wide Mouth Fit Guide.