Stainless steel, cupholder compatible, fits anywhere—the compact, reusable, refillable Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for quick adventures. 24 hours cold, 12 hours hot TempShield️ double-wall vacuum insulation Leakproof when closed Pure taste, no flavor transfer Durable stainless steel BPA-Free Dishwasher safe Not for use on a stove, in a microwave or freezer Keep hot liquids out of the reach of children water bottle, leakproof, insulated, 24 hours cold, 12 hours hot, dishwasher safe, 18 oz, cupholder compatible
13 reviews for Hydro Flask Standard Flex Cap Black 18 Oz
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Daniela González –
The perfect everyday water bottle
Iâve had this bottle for several years now, and I can confidently say itâs one of the best Iâve ever owned. It keeps drinks cold for hours, even in extremely hot weather, and it also keeps beverages hot long enough. The material is durable, but I still recommend getting the silicone flex boots for protection, since it scratches and dents easily with bumps. The size is perfect for fitting into backpack pockets and for travel. I also recommend this type of lid over others, since it never leaks and keeps drinks at the right temperature.
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Gideon Godinez –
Great Product!
Stays cold for so long and I LOVE the color. I love the durability and It’s fairly lightweight,
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nikroh –
Love Zulu H2O bottles!
Perfect metal water bottle! It has a handle, fits in the car holder, easy to clean, nice color , holds ice cold temperature well, has a good drinking spout, good value for the price and seems to be leak resistant. If only my husband stops losing them – this is Zulu number 3.
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Maria Teresa Terrazas Cruz –
Great water bottle
I love it, it’s my daily water bottle. Keeps water cold, easy to clean and not heavy
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jyw –
Nice mid-size water bottle
This bottle has a nice, wide mouth in case you want to add ice cubes, which also makes it easy to clean. It’s a great size for me — not too big, not too small. Doesn’t leak. No complaints.
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L.D. –
Keeps water cold for a little and dents easily
The water bottle is fine, itâs easy to use and aesthetically pleasing. My only issue is how easy it dents. I dropped it once and there is a huge dent, my other water bottles do not do this. Other than that, it keeps my water cold and works well.
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Matthew Petrie –
Perfect Size
This hydro flask is perfect for business travel. It fits easily in a side pocket of a backpack and fits the perfect amount of water during flights. The lid is secure and does not leak. The water also stays cold for a long time.
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A. Sue –
Great quality, durable
I bought both the standard size and a smaller (mini) flask as well; both are perfect for my needs. The quality of these flasks is outstanding — good material, very durable. I think I would prefer to have a cap with a spout for ease of drinking, so I’ll probably order one or two of those. Overall, a great product; well worth the money.
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SILVIA GIACOMELLI –
Bella boraccia , bel colore ananas ð….
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M. –
Tål diskmaskin med låg värme
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Farid –
Worth the money
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Client d’Amazon –
Super pratique pour tout type de sac. Garde le liquide froid.
Daniela González –
The perfect everyday water bottle
Iâve had this bottle for several years now, and I can confidently say itâs one of the best Iâve ever owned. It keeps drinks cold for hours, even in extremely hot weather, and it also keeps beverages hot long enough. The material is durable, but I still recommend getting the silicone flex boots for protection, since it scratches and dents easily with bumps. The size is perfect for fitting into backpack pockets and for travel. I also recommend this type of lid over others, since it never leaks and keeps drinks at the right temperature.
Gideon Godinez –
Great Product!
Stays cold for so long and I LOVE the color. I love the durability and It’s fairly lightweight,
nikroh –
Love Zulu H2O bottles!
Perfect metal water bottle! It has a handle, fits in the car holder, easy to clean, nice color , holds ice cold temperature well, has a good drinking spout, good value for the price and seems to be leak resistant. If only my husband stops losing them – this is Zulu number 3.
Maria Teresa Terrazas Cruz –
Great water bottle
I love it, it’s my daily water bottle. Keeps water cold, easy to clean and not heavy
jyw –
Nice mid-size water bottle
This bottle has a nice, wide mouth in case you want to add ice cubes, which also makes it easy to clean. It’s a great size for me — not too big, not too small. Doesn’t leak. No complaints.
L.D. –
Keeps water cold for a little and dents easily
The water bottle is fine, itâs easy to use and aesthetically pleasing. My only issue is how easy it dents. I dropped it once and there is a huge dent, my other water bottles do not do this. Other than that, it keeps my water cold and works well.
Matthew Petrie –
Perfect Size
This hydro flask is perfect for business travel. It fits easily in a side pocket of a backpack and fits the perfect amount of water during flights. The lid is secure and does not leak. The water also stays cold for a long time.
A. Sue –
Great quality, durable
I bought both the standard size and a smaller (mini) flask as well; both are perfect for my needs. The quality of these flasks is outstanding — good material, very durable. I think I would prefer to have a cap with a spout for ease of drinking, so I’ll probably order one or two of those. Overall, a great product; well worth the money.
SILVIA GIACOMELLI –
Bella boraccia , bel colore ananas ð….
M. –
Tål diskmaskin med låg värme
Farid –
Worth the money
Client d’Amazon –
Super pratique pour tout type de sac. Garde le liquide froid.
Doug Shire –
Best water bottle I’ve ever bought