Anchor Hocking Life Durable Glass Water Bottle is made of Tempered Tough Glass that is up to 100% stronger than regular glass bottles Features a stainless steel lid and silicone gasket with tethered stopper creating a leak-proof design for worry-free carrying Our water bottle with a BPA-free silicone sleeve can be used with all beverages, whether the drink is cold or hot, while the pebbled silicone sleeve texture improves grip The durable tempered tough glass water bottle is a little heavier and a lot stronger so there is no need to sacrifice on taste, quality or design Glass is made in the USA with ZERO Plastic so it is BPA/BPS-free and Lead-Free.