About this item Vacuum insulation. Keeps drinks cold for 24 hours and warm for 6 hours. Internal thread of the cap: no more drinking from uncomfortable bottle threads. Angled spout: ergonomic shape that allows high water flow without spilling. Dishwasher safe: all parts are dishwasher safe in the top shelf. Wide opening: easy to fill with ice and water and easy to clean. Magnetic handle: keeps the cap in place while drinking.