S'well is the sleek, chic, stainless steel hot/cold thermos bottle that will replace your office coffee mug and Nalgene in one go. It keeps cold liquids cold for 24 hours and hot liquids hot for 12. Its body fits comfortably in your hand as well as in most cup holders and the opening is big enough for most ice cubes, but small enough for drip-free (and slurp-free) sips. This larger 25oz. size can fit an entire bottle of wine!