This S'well bottle features a copper wall layer that creates a condensation free exterior so it won't sweat in your hands or your bag. Keeps beverages cold for 36 hours and hot for 18. The bottle fits most ice cubes and fits in most cup holders. Stay hydrated while showing your regard for the environment by saying no to plastic bottles and replacing them with this reusable bottle made of food-grade stainless steel, plus, it's stylish! BPA free, hand wash only.