This vacuum-insulated stainless-steel water bottle keeps 18 ounces of liquid hot or cold. And it’s got a surprise: its own cup and lid, stashed inside — so you'll always be ready to fill up with coffee or tea if you pass your favorite café. Plus, the bottom of the cup locks securely into the top of the bottle, so even if both are full, you can snap them together and hold 'em with one hand. Both are double-wall insulated and silicone coated for temp control and ease of grip, and the manufacturer offsets at least 110% of carbon emissions for each set sold.