At the end of the testing period, we give each water bottle a score of 1 (would not recommend) to 5 (would recommend) in each of the key categories listed above. We also take the bottles home so we can continue to test them—we'll update this story with new insights as we use them in our daily routines. It comes in three sizes—24, 32 and 40 ounces—in various bright colors. The bottle is made of food-grade stainless steel, and the cap and straw are made from BPA-free plastic. When testing this water bottle, we found that the lid is easy to screw on and off, and we love that the spout flips up with the push of a tab. If you need to keep hydrated but don't have the opportunity to refill your water bottle often, whether you're gearing up for a hike or a long day out and about, we recommend Iron Flask's 64-ounce water bottle. We like that this half-gallon bottle has three lids, including a straw lid that we found easy to drink from, even while standing or walking. A water bottle with a built-in straw eliminates the need for single-use straws and is easier to sip from during workouts. When shopping for a water bottle, it's also a good idea to consider which materials it's made from—glass, stainless steel, or plastic are common—and the manufacturer's care instructions. Most water bottles are not dishwasher-safe, so read the description carefully if that's important to you. The exterior is powder-coated to keep it from slipping and to help reduce condensation. You will have to hand wash it, but it comes with a lifetime warranty, so you know it’s built to last. We've also noticed that cleaning the straw is easy, as it detaches from the lid to allow for a thorough scrubbing.

There is a good chance the mold spores growing on your reusable water bottle aren’t harmful, but why take the chance?Julie Evans is an experienced wellness writer whose work has appeared in USA Today, CafeMom, SheKnows, and more. Julie understands the importance of proper hydration and won't leave the house without her favorite water bottle. She takes care to only recommend the best products to her readers. COLD FOR 12+ HOURS: The ColdFlow Flip Straw insulated water bottles series is built to travel; Drink on-the-go with a flip of the straw and a rugged handle to carry or clip; Keeps cold drinks cold for up to 12 hours and iced for up to 48 hours To find the best water bottles with straws, we tested 25 bottles in the Verywell Testing Lab. We also tested some in the real world, using them during our daily routines to see how they hold up over time. In addition, we had a certified personal trainer from our Review Board review this article for accuracy and how to choose the best water bottles with straws.

To prevent mold spores from making a home in your water bottle, we recommend cleaning your reusable after every couple of uses (if you can’t clean it every single time).

Is Black Mold in a Water Bottle Dangerous?

All of the stainless steel water bottles with straws on our list are insulated in some way. But Owala's viral FreeSip is our favorite because it keeps our water cold for longer—and has a range of innovative features that set it apart.

The smaller sizes fit in most cupholders, whether you're sipping in the car or on an exercise bike. But like Owala's FreeSip, SimpleModern's water bottle is meant for cold drinks only. For hot drinks, try investing in a high-quality insulated tumbler. Fill your sink with hot water and dish soap. Leave your water bottle to soak in the soapy water for some time and then use a bottle brush to reach the bottom and edges of your bottle and scrub thoroughly. Rinse the water bottle with hot water, before allowing it to air dry. This method works well for plastic water bottles. Grab some Vinegar If you're going to use your water bottle daily, investing in a high-quality, durable option that you enjoy using may greatly benefit your health and pay off in the long run. If you prefer a bottle that you won't be bummed if you misplace, choose a less expensive option, like Pogo's Plastic Water Bottle.Finding a high-quality water bottle is key for staying hydrated. Bonus points if you can find one with a straw: Drinking through a straw is convenient when you're on the move, so you'll likely drink more water. Aside from quenching your thirst and preventing dehydration, drinking enough water may also boost your digestion, reduce fatigue, prevent headaches, and even improve your complexion. To find the best water bottles with straws, we researched and reviewed dozens of options from the most trusted brands. We've also tested over 25 bottles in the Verywell Testing Lab and will continue to test newer models as they come out. It comes in several sizes and an array of colors. A carrying clip is built into the cap so you can easily take it on the go. The price is right, too, as you can score the 24-ounce model for less than half the price of other bottles on our list.