First and foremost, it's essential that these products are easy to use, and we rated our ergonomics metric on factors like carrying handles, ease of filling and cleaning, and whether they fit in a car cup holder. The durable plastic cap has an ergonomic carry handle with a carabiner-like clip, making it easy to lug around. We purchased these bottles to compare them all side-by-side, so you can rest assured that you're getting the most unbiased and thorough review.

The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. We focus on performance when we score products, and we appreciate a good deal as much as anyone else. The Iron Flask is attractive and lightweight, plus its straw-style lid promotes hydration more readily than a standard wide mouth. Everyone drinks water, but not everyone takes hydration as seriously as our lead bottle testers, Jon Oleson and Jane Jackson.Since 1968, Paperchase has been spreading joy through its cornucopia of smile-inducing stationery, cards, gifts and more. For the leakproof test, water bottles were filled with blue-dyed water, closed tight, and set on their side for 24 hours. We filled them with blue-dyed water and left them on their sides on clean sheets of paper overnight to look for any signs of leakage.

Others leaked after the room in which they were sitting heated up for the day, building up pressure in the bottle. An outlier was the classic Nalgene Wide Mouth, which imparts surprisingly little taste to a bottle of hot water and is also surprisingly resistant to flavors. If taste and insulation are a higher priority for you, the Klean Kanteen TKWide Recycled Insulated scored higher in those two metrics and just a point behind the Hydro Flask, overall.Because it's a filter bottle, we were hesitant to put any flavoring into it to avoid contaminating the filter.

The soft plastic, collapsible bottles--like the Nomadr Collapsible--heated up the most under the sun. At the end of the day, we loved toting it around town and even on day outings, but you'll probably select something lighter and more voluminous for backcountry travel. We keep a constant eye on the market for new and innovative designs and have seen many trends come and go over the years. However, when sipping from the straw, the filter did its job of removing any chemicals, and the taste was clean.Likewise, the Lifestraw Go has a carabiner attached to the lid by a nylon strap, making it easy to clip on a bag and a convenient flip-up bite straw. Lastly, we considered any feature that added to longevity or durability and, conversely, docked points for any feature that would wear more quickly. By signing up you agree with this and confirm that you are over 13 years of age, or have the consent of a parent or guardian.

Some bottles went a step further, like the Purifyou Premium glass bottle that has a rubber gasket and metal plug to ensure that your water doesn't touch plastic.The straw attaches to the cap via a silicon receptacle, which we also found could be a weak point for wear.