Keep Cup/ Stanley I’ll hold my hands up and say it: I have a water bottle addiction. So when the joke about having an emotional support water bottle made the round a few years ago, I resonated. My flatmate likes to joke that my water bottles become more comically large all the time, and it’s true: I like to have a bottle I can rely on. As a result, I’ve tested plenty over the years on my quest to find the perfect size: one that I can travel with, that I only have to refill once or twice throughout the day, and that can keep my drink cold as long I need without it spilling all over my bag. There are always new culty water bottles being released, so I decided to put them to the test. Keep reading for my round up of my favourites. Best water bottles at a glance: Best all round: Frank Green Chrome Ceramic Reusable Bottle Best for outdoor adventurers: YETI Rambler 36 Bottle With Chug Cap Best small bottle: Stanley 1913 FlowState Spring Bottle Best for work: Owala Crown Jewel FreeSip Best BPA free: Keep Cup Ora Water Bottle How I tested the best water bottles Honey Jane Wyatt/HuffPost I mean, I drank water out of them, that’s for sure. But if you’re wondering my methods, I filled each one to the brim, and left them out on the side for a day before drinking to see whether they’d keep the water cool. I also considered price point, weight, whether it was dishwasher safe and leakproof, capacity, and if it came with a warranty. And of course, I considered bonus features like the type of drinking mechanism (straw or normal ‘opening’) and available colours. My favourites are rounded up below. 8 best water bottles to shop now Related... These Are The 8 Best Noise-Cancelling Headphones For Travel, Focus, And Sleep Beat The Heat With YETI's Must-Have Coolers For Frosty Beverages On The Go A Complete List Of Camping Gear You Need For Your Outdoor Summer Adventure