Hydrapeak 12oz Stainless Steel Double Vacuum-Insulated Coffee Mug, Reusable Travel Cup with Integrated Handle and Press In Lid (Aqua)

Product Information

A pick from 2017, the 22-ounce Lifefactory Classic Flip was the best wide-mouth glass bottle available. The Hydaway was our collapsible travel pick in 2018, and it proved polarizing: We received feedback both from people who loved it and from others who hated it. In addition, each year, we listen to the opinions of Wirecutter’s readers—we’ve incorporated a number of great suggestions from the comments on previous iterations of this guide.

Second, although the bottle has alternate lid options, we tested the Flip Cap in 2018, and it leaked. Flaws but not dealbreakers: Since the lid covers the drinking lip, the bottle’s threads are on the drinking surface. Someone finally got the courage to open the bottle and clean it out, and the next day a bottle full of water tasted like water and nothing else. A double-walled bottle already stops solid conduction, and a vacuum-insulated bottle stops gaseous convection. This means if you take the bottle out of a hot dishwasher and fill it with cold or room-temperature water, it will resist shattering better than bottles made of common soda-lime glass.Both the Vapur Element and the Nalgene Wide Mouth Cantene also leaked from their seams during our twist-and-torque test. If you’re drinking anything besides water, gunk will build up in your bottle over time, so you’ll need to clean it occasionally.

INSULATED: Our double wall vacuum insulated tumblers keep drinks cold for up to 24 hours, perfect for long school days or travel. It has a few design features that make it more functional than most, including the type of glass it’s made from, as well as an especially useful cap, which is also lined with stainless steel.After testing more than 100 bottles, we truly believe this is the Goldilocks size: not too big, not too small. Sometimes manufacturers make bottles with copper linings in an attempt to keep the contents even hotter or colder. The Yeti Rambler is “constructed with a copper plate to protect against UV,” according to the company’s PR reps. They include our most versatile pick, which has elbowed its way past more well-known competition, and an inexpensive bottle with a straw, beloved for its functionality in any driving scenario.