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. 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. to 5 stars: These are the best stainless steel water bottles we tested. We recommend them without reservation.

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.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 Tested 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."

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.

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. 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. 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 help you stay hydrated, especially during busy days, we recommend investing in a functional water bottle that you can bring with you to the gym and the office. Stainless steel water bottles keep your water cold for hours, are better for the environment than plastic, and aren’t prone to breaking like glass water bottles can be. 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.

The double-walled insulation kept our water icy cold. Thermoflask notes that the bottle will chill drinks for 24 hours or keep them hot for 12, making it a solid choice for your morning coffee or tea. The attached handle is easy to hold, although we wish it could be folded down when not in use. 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. verifyErrors }}{{ message }}{{ /verifyErrors }}{{

How much plastic is saved by using a reusable water bottle?

A 64- to 84-ounce stainless steel water bottle is a great option if you're playing tennis or a sport where you might be in hot weather for several hours and want your water to remain cold. A 17- to 32-ounce water bottle is easier to carry with you during everyday activities, like going to work or the gym. 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 4.7 stars: These stainless steel water bottles are excellent—they might have minor flaws, but we still recommend them. 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. Purist's Mover Vacuum Water Bottle has a stylish, compact design. But for how expensive it is, we wish it could go in the dishwasher. The cap is also hard to open and leaked when we dropped the bottle from waist height. 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. But that's not all the lid has to offer. Use one hand to push the button, and it flips open to reveal a two-in-one spout. We love that you can sip from the straw or use the wider opening to grab a big gulp of cold water without needing multiple lids.

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. 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. 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). 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.