Our 2nd generation Kablo bottles come with a solid (one-piece) 304 stainless steel cap, making them virtually indestructible, corrosion-resistant, and 100% dishwasher safe. This means you will not get any of the toxic glues that 99% of water bottle manufacturers use in their caps. Industrial adhesives used in caps will often break down, off-gassing harmful chemicals that we inevitably ingest. Our one-piece solid stainless steel cap ensures the Kablo quality and safety you have grown to love, and that we stand behind. Our bottles are leadless, non-toxic, BPA/BPS-free, phthalate/cadmium-free, and composed of 100% high-density borosilicate. Borosilicate glass is chemically unreactive and will never impart flavors or leach chemicals into your beverage like plastic or stainless steel. Resistance to thermal shock allows you to enjoy iced or boiling hot beverages. Our bottles are perfect for natural spring water or mineral water without compromising the quality or structure of the water.