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The 64-ounce Iron Flask Water Bottle is our favorite large capacity option if you want to space out your refills. (However, we also stand by the other five sizes if you're in the market for something smaller.) We love that it comes with three different caps: a straw lid with a carrying loop, a flip lid, and a stainless steel cap that covers the bottle's wide mouth opening.
In testing, we found that this bottle didn't keep our water as cold over time as Takeya's Actives or Thermoflask's bottles did. But with only a few degrees difference, we still think it's a solid option. We're also fans of the lid, which has a unique design that's a delight to drink from. and below: We don't recommend stainless steel water bottles with this rating; you won't find any on our list. Water Bottles We Also TestedWhen looking for a stainless steel water bottle, choose one that's well-insulated, in a size that's convenient for you. We researched and tested some of the most popular stainless steel water bottles on the market to find out which ones are truly the best. We also tapped experts, including Todini, for their opinions on which features set the top water bottles apart. For a stainless steel water bottle that comes with a filter built in, we love this option from Brita. It filters out unpleasant tastes and odors, for fresh-tasting water with every sip. We like that the filter is included at a similar price to most other bottles on our list (although you'll need to replace it regularly to reap the full benefits, according to the brand). This lightweight bottle features a sleek, stylish design that comes in almost 40 colors and patterns, from solid hues to botanical prints. We love that it's leakproof, with a secure, screw-on lid. Available in three sizes (9 ounces, 17 ounces, and 25 ounces), the narrow silhouette makes this bottle easy to carry with you, sliding in most bags and cupholders with ease.
We were initially impressed by MIRA's 17 Oz Stainless Steel Vacuum Insulated Water Bottle because of its leakproof seal. But it dented easily, and its heavy weight made it uncomfortable to hold. We love that this sturdy bottle doesn't leak, even when dropped or flipped upside down. But unlike Takeya's Actives bottle, it did dent after multiple falls. Available in a range of jewel tones and sizes, you can grab a smaller bottle for sitting in your car's cupholders or a larger size to cut down on your refill trips. Just note that the larger sizes can start to feel heavy, weighing between 1 and 2 pounds each. Like Corkcicle's Canteen, S'well's Water Bottle features triple-walled insulation—perfect for keeping your tea or coffee hot all morning long. The brand claims the largest bottle can keep drinks cold for up to 48 hours and hot for around 18. While we didn't test the full extent of this range, the bottle did perform well in our temperature tests, keeping our water fresh and cold after three and six hours.
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Single-walled insulation means the bottle is made from a single layer of stainless steel. You won't find any single-walled bottles on our list because they don't stabilize temperature very well, meaning your water won't stay cold over time.
In total, we tested over 20 water bottles in the Verywell Testing Lab—but not every product scored high marks. Although we liked some aspects of these stainless steel water bottles, each left something to be desired:There are almost 30 colors and patterns to choose from, including bright gradient and marble printed options. And we love that the 64-ounce size costs almost the same as some of our other recommendations, making the Iron Flask a solid value. Just note that this water bottle is hand wash only and can't go in the dishwasher. We liked that Hydro Flask's 24 oz Lightweight Trail Series Water Bottle has a convenient handle and a sleek silhouette that fits in most cupholders. However, when we dropped it, the lid almost flew off, and the slippery, shiny finish was tough to hold.
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