Hydration is perhaps one of the most overlooked keys to health and fitness. When you're properly hydrated, your energy levels are up, mental clarity is boosted, and your body is primed for exercise.
One step to ensure you're not overlooking hydration is to get a water bottle that makes you more inclined to sip frequently throughout the day. Of course, you need it to work for your hobbies—whether that's hanging off a mountainside or running ultramarathons—and most importantly, keep your water just how you like it: cold. We've rounded up the best bottles for every occasion and preference. Take your pick so you'll always be hydrated and ready for whatever demands your training sessions—and life—throw at you.
For the tech- and health-obsessed, consider Pryme Vessyl—a smart water bottle that automatically tracks and calculates your hydration needs based on your age, height, weight, activity levels, sleep, and sex. Sync the bottle to your favorite wearable or smartwatch and download the app to receive insights and notifications. Pryme Vessyl also shows your hydration levels on the side of the bottle: The closer you get to your "prime" hydration, the higher a blue light climbs. This is great if you need an extra reminder to drink more water.
Bübi Bottles are like the Swiss army knife of containers. Not only is the bottle microbial-free, it's also super pliable, foldable and collapsible, and puncture-resistant—making them perfect for traveling, sports, camping, and pretty much anywhere else you want to take it. What's more, the bottle is microwave, freezer, and fire (!) safe so you can use it to heat up (or freeze) liquids for consumption or as a medical aid. Cold compress, anyone?
The Best Water Bottle for the Outdoors: LifeStraw Go
With LifeStraw Go, you can stop your hike at a river or stream, fill up your bottle, and drink. This award-winning bottle serves as a filter—sans the chemicals—providing you with up to 1,000 liters of safe, clean drinking water with no aftertaste, no matter where your adventures take you. The sturdy yet ultra-light bottle has a flip-top bite valve and a carabineer attachment to clip on to your backpack for easy access.
The Best Temperature-Regulating Water Bottle: Corkcicle
If you're looking for a sleek bottle that stands the test of time and temperature, then Corkcicle is your best bet. These stainless steel bottles are crafted using triple insulation to keep your icy-cold beverages, well, icy cold for up to 25 hours (even longer if you add ice). You can even keep tea or coffee steaming-hot for up to 12. Corkcicle's easy-grip flat sides, no-slip bottom, four different size options, and an incredible range of colors and finishes offer loads of options whether you're looking for something to keep at the office or in-tow at all times.
The Best Water Bottle for Running: REI Nathan Speedview Handheld Flask
Simple, functional, yet ingenious, the Nathan Speedview Handheld Flask with Media Carrier from REI covers all your basic needs on a run. Store your phone or music device (fits iPhone 5, iPhone 4s, Galazy S3, and other similiar-sized phones and players) in the zippered pocket; its touch-screen allows you to choose your tunes and check your splits with absolute ease and visibility. The 18oz bottle is dishwasher safe to boot.
The Best Water Bottle for Day-to-Day Life: Hydro Flask Standard Mouth
If you're on the market for a bottle you can take on the commute, use all-day at work, haul to the gym, and have it withstand any bumps and bruises along the way, then Hydro Flask is perfect. The pro-grade stainless steel body is durable, sweat-proof, and insulated to keep hot drinks steaming for up to six hours and cold drinks icy cool for up to 24. The phthalate-free bottle comes with a screw on loop cap or sport cap for easy sipping. Choose from 12, 18, 21, 24, and 32, 40, and 64oz sizes, as well as standard or wide mouth options, and tons of colors. Oh, and if you do get a little rough, don't worry; Hydro Flask has a lifetime warranty on all bottles.
The Best Water Bottle for the Accident-Prone: YETI Rambler Bottle
Crafted with kitchen-grade stainless steel, this bottle is designed for life and all its rugged unpredictabilities. YETI took the famed insulating abilities from their Rambler Tumblers and created 18, 36, and 64oz bottles that are practically indestructible. In addition to the double-wall vacuum insulation, these bottles boast a temperature-locking gasket lid and a no-sweat body.
The Best Spill-Proof Water Bottle: Lifefactory 22oz Glass Bottle
Tired of water bottles leaking in your backpack or spilling when you knock it over at the gym? Lifefactory's new straw cap is designed to be "spill-proof." Plus, the bottle has a convenient pivoting handle so you can carry with ease. If you're weary of glass, consider the bottle is phthalate-free, prevents any aftertaste from plastic or metals leaching into your water, and it's dishwasher safe. The outer silicone sleeve helps prevent the bottle from breaking and gives you a non-slip surface to hold on to. The wide-mouth of the bottle makes it easy to add ice cubes, fruit slices, or tea bags, too.
The Best Water Bottle for Cycling: CamelBak Podium Ice
Insulated to keep your water 4x colder than a standard water bottle, innovated to self-seal and eliminate spills, and reengineered with a squeezable body for an easy-to-control flow rate whether you're getting a quick sip or trying to cool off during hot and humid rides, the CamelBak Podium Ice is a cyclist's go-to. What's more, the bottle is made from medical-grade silicone, and is specially crafted so you taste your water—not the bottle.
S'well water bottles are sharp, sleep, and totally personal to your sense of style. The double-walled stainless steel bottles keep your drinks cold for 24 hours and hot for 12. Aside from being non-toxic, non-leaching, you can feel good knowing S'well has partnered with the U.S. Fund for UNICEF to help provide clean drinking water to children around the world. A bottle that looks good and does good—that's a win-win.