18 oz. Standard Mouth w/ Flex Cap (Fall 2023)

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Convenient everyday size; keeps cold for 24 hours, hot for 6

Whether you’re headed to the gym or to your next outdoor adventure, you can go with confidence with the Hydro Flask 18 oz. Standard Mouth bottle. This portable hydration buddy works for cold and hot liquids and fits in most car cupholders and bike bottle racks. Proprietary TempShield™ technology makes for a slim, lightweight flask and keeps cold liquids cold for up to 24 hours, and hot liquids hot for 6 hours.


Brand Name:
Hydro Flask
18 fl oz / 532 mL
9.7 oz / 275 g
Yes - Insulated
Mouth Diameter: 1.91 in / 48.5 mm
Bottle Width: 2.87 in / 73 mm
Bottle Height: 9.6 in / 245 mm
Mfg Sku/Part Number:
Other Features:
• Convenient, easy-to-carry size
• Flex Cap offers flexibility, insulation, and carrying comfort
• TempShield™ Technology:
-- Allows their flasks to have thinner walls without sacrificing performance
-- Eliminates the need for a heavy bottom cap to seal the flask
-- Allows for a slimmer, more streamlined design
-- The lightest-weight bottles in the insulated hydration category
• BPA-Free
• Durable, sweat-free powder coat finish (Stainless has no powder coat)
• Compatible with Sport Cap (sold separately)
• Lifetime Warranty through Hydro Flask

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