Owala FreeSip Insulated Stainless Steel Water Bottle, 32 oz. Features: It has a patented FreeSip spout allowing for both sipping through a built-in straw or swigging from the spout opening. Insulation: The double-wall insulation keeps drinks cold for up to 24 hours. Convenience: It includes a push-to-open lid with a lock, a carry loop that doubles as a lock, and a cup holder-friendly base. Care: The lid is dishwasher-safe, while the cup should be hand washed. It is not suitable for hot liquids. Materials: The bottle is BPA, lead, and phthalate-free.