Sigg Lifestyle Loop Top Water Bottle (0.6-Liters): Sports & Outdoors
I got one of these aluminum water bottles for free because I volunteered at the Kokua Festival this year. I love this. Since the lining is made of aluminum, it never picks up any weird tastes from other foods. It's stylish looking and the loop on the top can easily be hooked onto your backpack for hiking.
I love this style of thermos. I like the styles at iloveobento.com a bit more, but for the price difference, this one would do just fine!
Best purchase I've ever made! Think of all the plastic water bottles you stop wasting.