A wide-mouthed bottle is easier to fill with water, either at a fountain ... a sweaty treadmill workout. The spout lid on the Takeya Actives bottle locks open, so it doesn’t flop down on your ...

There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing.

My water bottle is attached to my hip. I carry it around the house all day, leave it by my bedside at night, and take it with me pretty much whenever I go on errands, walks, and trips. Before I ...

The locking mechanism prevents spills, although it’s easy to flick open and ... beverages, I filled them halfway to the top with boiling water, screwed on the lids, and let the bottles sit ...