On your search for the perfect water bottle, sometimes it isn't so much the bottle you should be giving the most attention to. That's because so many of them work more or less the same: BPA-free stainless steel with double-walled insulation.
The equally important, yet often overlooked differentiator among them is the cap. And the Thermoflask from Takeya has one of the best cap designs you'll find for everyday carry that really takes its functionality up a notch or two.
For starters, it has a sturdy hinged carry handle that's compact enough to stay sleek, yet wide enough for a comfortable 2-3 finger grip. This is a godsend for lugging around higher volumes of water to last you through the day. Built into that same hinge is a leakproof, screw down spout cover that keeps gunk and grime out. The spout itself resembles a short and wide straw providing a comfortable, free-flowing sip every time. For refilling the bottle or ultra wide-mouth chugging (you know who you are), you can easily unscrew the cap thanks to a textured grip rubber ring at the base of the lid.
Of course, the bottle itself is no slouch, either. It's made from vacuum-insulated 18/8 premium food-grade stainless steel to keep drinks cold up to 24 hours, or hot for 12. That double-walled construction pulls double duty to not only insulate your drink but also keep the bottle from “sweating.” Combined with its subtle textured surface, the Thermoflask makes it easy to hand-carry or store in your bag. It also comes in five colors and five sizes with fairly minimal branding on the bottle itself.