







Stay hydrated with the Hydro Flask 21 oz Standard Mouth Bottle. With a comfortable, flexible handle, the reusable water bottle is leakproof with double-wall insulation to keep drinks cold up to 24 hours and hot for up to 12 hours. The insulated bottle easily fits ice cubes and is dishwasher safe. 24 hours cold. 12 hours hot. TempShield® double-wall vacuum insulation. Leakproof when closed. Won’t retain odor or leftover flavor. BPA-Free. Dishwasher safe. Easy to clean by hand or dishwasher. Stays clean and colorful. Not for use on a stove, in a microwave or freezer. Keep hot drinks out of the reach of children. Bottle fits all Standard Mouth caps and lids, including the leakproof Flex Straw Cap.
21 OZ BLACK BOTTLE: Fill and refill with the Hydro Flask Standard Mouth insulated water bottle with leakproof cap. With a comfortable, flexible handle, the bottle is easy to grab and take anywhere. Double-wall insulation keeps drinks cold up to 24 hours and hot for 12.
24 HOURS COLD. 12 HOURS HOT: The insulated water bottle keeps drinks cold for 24 hours and hot for 12 thanks to double-wall vacuum insulation. TempShield insulation is designed to be lightweight and efficient temperature retention, keeping contents ready to sip.
LEAKPROOF: Say goodbye to leaky water bottles. The Hydro Flask Flex Cap is leakproof when closed. Toss it into your bag without worry.
FITS CUPHOLDERS: The cupholder-friendly design means your bottle fits seamlessly in most cupholders. Designed for seamless cupholder cohabitation, it’s right at home on the open road, on the sidelines, in a pack or wherever you need to set your sips.
PURE TASTE: Durable pro-grade stainless steel ensures pure taste and no leftover flavor transfer. So, today’s water won’t have any taste of yesterday’s iced tea.
DISHWASHER SAFE: Easy to use and easy to clean, just toss the lid and bottles into the dishwasher. Designed to keep bright color, being dishwasher safe means your favorite Hydro Flask is always at-the-ready.
13 reviews for Hydro Flask Water Bottle – Insulated Stainless Steel – Non Spill, Leakproof in 21 Oz Black
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$26.20

desert lady –
Reliable Hydration Bottle
I’ve been using Hydroflask since the release. I believe it was 2009 when I purchased my first bottle. Hydroflask has gone through quite a few changes, design wise, changing ownership and adding products. It’s still my go-to hydration bottle. There are probably other bottles on the market equal to Hydroflask but it’s a brand I have found to be reliable. My water stays cold, it doesn’t leak and it can take an occasional drop.The 21oz fit easily into my bag and isn’t to heavy to carry if I’m holding it. I like the matte finish so it isn’t slippery in the hands. The lid quality is good and the handle is easy to grip and hold. A bottle brush fits easily into the bottle for cleaning and the “O” ring on the lid can be removed to scrub it and keep it from getting gross. Overall I highly recommended Hydroflask products.
C. Thompson –
Very satisfied
Excellent water bottle. Very sleek and easy to hold. Keeps water cold. No problem with leaking.What I really love is how easy to clean it is. Bottle can easily be flushed with soap / hot water and I haven’t had any problems with the occasional deep clean in dishwasher.
Sky –
Better than most bottles
As someone who’s always on the go, my Hydro Flask has become an essential part of my daily routine. The insulation is no joke—it keeps my water ice-cold during long training sessions and my coffee piping hot when I’m heading to early morning workouts. What really stands out to me is how durable it is; I’ve dropped it more times than I can count, and it barely has a scratch.The wide mouth design makes it easy to fill with ice or clean after a long day, and the sleek design fits perfectly in my gym bag or car cup holder. I also love how it doesn’t sweat, no matter how cold the contents are, which is a huge plus when you’re carrying it around all day.For athletes, travelers, or anyone who values convenience and performance, the Hydro Flask is worth every penny. It’s not just a water bottle—it’s an investment in staying hydrated and fueled no matter where life takes you
mownhoj –
Easily the best
This is easily the best water bottle or even thermos I’ve ever had in 58 years. It keeps water cold far longer than amy other water bottle I’ve ever had.
DPRIMM –
Works great
My son dropped and dented his old one that came with the straw cap. I was hoping the straw cap would fit this one and it does, all is good great item even if they are a little pricy.
Sam Shocker –
Great for everyday
Great value for the money. I purchased this a recent vacation and it fit in my bag perfectly and it kept my water cold and did spill. It is durable, however, it does dent pretty easily.
Leo –
Hydro Flask Holds Temperature Well.
My nephew had a Hydro Flask that he put hot coffee in when he left Arkansas and he said the coffee was still hot when the got to Houston, no less than 7 hours. That convinced me to at least look at them. I got one on sale that was a pink color and have been using it. My friends laughed when they saw the pink flask, but when they saw that it worked so well, they wanted one too, but one of another color. It fits in my cup holder, is easy to clean and small and light enough to fit anywhere .
K –
Great product
Arrived on time, great color, works well, no leaks, great quality as usual from hydroflask. I bought 2 more in different colors.
Cider –
Nice quality, beautiful bottle. The cab has rubber seals, which doesn’t create noise when using, love it.
JD –
easy to clean, sturdy, no leaks. can’t fault hydroflask
Raghdah Alzahrani –
روعه تحفظ البروده ومافيها طعم
Tommaso Olivotti –
Bellissima borraccia, leggera ed estremamente efficace. Tiene sia caldo che freddo in maniera TOP
Kevin Morales –
Excelente marca, puedes hacerle grabado láser