When I got my first S’well bottle ($25-$45) as a gift, I was a little skeptical about its claim that the bottles keep drinks cold for 24 hours and hot for 12 hours. Still, I added my ice, sipped, and ultimately forgot about the bottle until the next morning, when I took a sip of it and was pleasantly surprised (and pretty impressed) that my drink was still entirely ice cold.
This reusable, eco-friendly, stainless-steel bottle comes in multiple sizes, and has a mouth big enough for ice cubes, but not so big you spill all over yourself when you drink from it. It also fits in a regular-sized cup holder, so it's great to take on your workouts. There are cute options for colors and textures too, and since you can customize the bottles, they make perfect gifts. I swear by my S’well bottles now (oh yes, I have more than one), and love knowing that part of the money from each one I buy goes to various charitable causes.
— Hilary White, editorial assistant