Next, we select a set bottles to test for ourselves. To see how effective each bottle's insulation was, we fill them with ice and cold water. We use a liquid thermometer to measure the temperature of the water immediately after we pour it, 3 hours later, and 6 hours later, as the bottles sit on a sunny windowsill. Sleek and well-designed, Hydro Flask's Standard Mouth Bottle is our recommendation for a stainless steel water bottle with a wide opening that's easy to drink from. We like that the mouth is the perfect width and features a comfortable lip. The size and shape makes adding ice, fruit, or other ingredients to your water a breeze. Water bottles can range in size from 12 ounces all the way up to 84 ounces (or even more). "When choosing a stainless steel bottle, consider what you’ll be using it for," Todini says. "If you’re active in sports choose a lightweight and slim bottle that can easily be carried, or if it’s your everyday water bottle choose one that fits in your bag or car’s cup holder." However, it did not pass our drop tests, denting and leaking after it hit the floor. Even so, we still recommend this bottle as a convenient, mid-sized option with an effective filter.

Made from 18/8 pro-grade stainless steel, this Hydro Flask is BPA-free. But while it kept our water cold for three hours, we noticed the temperature had increased by 8 degrees after six hours—meaning this bottle's double-walled insulation isn't effective as others we tested. If insulation is important to you, we recommend investing in Takeya's Actives Water Bottle or Thermoflask's Water Bottle instead. to 4.7 stars: These stainless steel water bottles are excellent—they might have minor flaws, but we still recommend them.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.

The wide mouth opening allows us to add ice cubes, while the spout lid ensures we can sip without soaking our shirts. Combined with the handy carrying loop, we recommend this bottle as your everyday go-to, especially if you work out often and need a basic bottle for the gym. The bottle's slim design is easy to hold and fits in most cupholders. This, combined with the handy carrying loop that's attached to the lid, enables us to bring this bottle almost anywhere. We often test water bottles in the Verywell Testing Lab. To find the best stainless steel options, we first research dozens of popular models from the most trusted brands. We also ask experts like Kristina Todin, RDN, a registered dietitian nutritionist, for her advice on how to shop for a stainless steel water bottle that's both functional and durable. 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. To test how portable the water bottles are, we try fitting them in a standard car cupholder and carry them around using their handles, if applicable. Finally, we drop each water bottle from waist height six times (three on its side and three on its lid). At the end of the test, we give each bottle a rating from 1 (would not recommend) to 5 (would recommend) in 6 key categories: drinkability, seal, portability, insulation, durability, and overall value.to 5 stars: These are the best stainless steel water bottles we tested. We recommend them without reservation.

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). While Takeya's Actives bottle ultimately won out, we also highly recommend this option from Thermoflask. We love that, for a similar price, this bottle comes with two lids—one with a spout and one with a straw—so you can choose your preferred method of sipping. Triple-walled insulation works the same way, except there's a third layer of steel or copper (creating two vacuum layers). S'well's Stainless Steel Water Bottle uses triple-walled insulation to keep drinks cold for 36 hours and hot for 18 hours. When 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.

How much water should I be drinking each day?

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.

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. While this bottle keeps our water cold for hours, preserving ice cubes overnight with ease, Owala notes that it's not meant to hot hold beverages. Instead, we recommend S'well's Water Bottle for your tea or coffee. 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. 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: We also love that the Rambler is dishwasher-safe, for easy cleaning. Choose from over 20 bright and metallic colors to find your favorite style.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. Drinking enough water has plenty of benefits: “Staying hydrated is key for not only your body’s performance, but also mental clarity and productivity," explains Krista Todini, RDN, a registered dietitian nutritionist. Although the exact amount you should be drinking varies, it's safe to say that adding another glass or two to your daily routine is a good idea for most people. verifyErrors }}{{ message }}{{ /verifyErrors }}{{