Kablo Glass Water Bottle 32 or 21 oz, 100% Borosilicate Glass, BPA Free 365-DAY REPLACEMENT: If your glass bottle breaks within the first year of purchase, we will ship you a replacement for free and cover the shipping cost NO CONTAMINANTS: Leadless, non-toxic, BPA-free, BPS-free, phthalate-free, cadmium-free, and composed of 100% high-density borosilicate glass. We use uncontaminated organic materials to produce the highest quality borosilicate glass water bottles available. Borosilicate glass is chemically unreactive and it will never impart flavors or leach chemicals into your beverage like plastic or stainless steel alternatives SAFE: Kablo bottles comply with strict Federal and State standards for undecorated glassware, including FDA Lead and Cadmium guidelines and Californias Proposition 65. Resistance to thermal shock makes our water bottle a safer alternative allowing you to enjoy iced or boiling hot beverages; Our glass bottles are dishwasher safe; stainless steel caps should be hand washed. By choosing a glass water bottle you are helping to reduce single-use plastic bottle pollution and keeping our oceans clean AIRTIGHT & LEAKPROOF: The exterior of our cap is 304 stainless steel, for the interior we use BPA-free polypropylene (pp#5) as it does not contain Bisphenol A (BPA), a chemical that leaches from certain types of plastic and has been linked to various diseases. Polypropylene has no known leaching characteristics and is more durable than other types of plastic. Our cap features a 100% silicone lining (removable for easy cleaning) to prevent leaks, and is also BPA, BPS and phthalate free FITS CUP HOLDERS: Fits into standard size cup holders; wide mouth 2-inch opening for ample room to add ice, and create fruit or herb infusions. One or two refills provides your total recommended daily water intake. Protective silicone sleeves are available to purchase and sold separately on Amazon