S'well bottles feature a triple-layer vacuum insulated construction designed to keep beverages cold for up to 24 hours or hot for up to 12. Made of 18/8 food grade stainless steel with a superior construction that allows for easy refilling and reuse to reduce the need for single-use plastic water bottles. Copper wall coating creates a non-condensing exterior that won't sweat on your hands or in your purse. 9oz are perfect for on-the-go and fit perfectly inside purses and lunch bags. 17oz emulates a standard size water bottle and is perfect for staying hydrated at the gym or while traveling. 25oz is perfect for staying hydrated while traveling. Fun fact: holds an entire bottle of wine. The bottle mouths fit most ice cubes, while the body fits in standard size cup holders. BPA free and reusable. High-grade 18/8 stainless steel. BPA free. Triple-walled for maximum insulation, leaving no condensation on the outside. Hand wash only. High-grade 18/8 stainless steel. BPA-free. Triple walled for maximum insulation, leaving no condensation on the outside.