Staying hydrated is one of the most important elements of staying healthy, and this minimal-chic bottle may be just what you need to actually get yourself to do it. It's perfect for travel, since it features a silicone loop that can be used as a handle or stored over the leak-proof lid. And sipping lukewarm water or cold coffee will be a thing of the past with this beauty, which can keep drinks hot for up to eight hours or cold for a full day. You'll never want to leave home without it.