The glass water bottle is made from 100% durable borosilicate glass which is BPA, BPS, PVC, Lead, and Cadmium free; Our ergonomically designed glass bottles are resistant to cracks and temperature. Our top-quality clear water bottles come with a protective silicone sleeve, bamboo lid, and an extra stainless steel lid; Each cap is lined with a silicone O-ring so it will never leak no matter how you place the bottle. Our water bottle is 100% recyclable, and it does not leach any harmful chemicals or unwanted flavors into your water like plastic or metal. The food-grade silicone sleeve provides maximum impact protection, easy-grip, and no slips.