You need a swell bottle. I feel like everything came after swell. RTIC, Yeti and a hundred other knockoffs. This is the best bottle ever. It really keeps water cold, with ice in the bottle for hours! Like 18 hours. Sometimes 24. It's insane. It keeps my coffee hot for 6-8 hours. Get a bottle brush for cleaning the, don't use the dishwasher. They make several different sizes and styles. I have the small, medium and large bottles but now they offer wide mouth ones too!!