bkr is made of BPA-free, phthalate-free, FDA approved materials. The bottle is soda-lime glass, the sleeve and gasket are silicone and the cap is made of food-grade, recyclable polypropylene. BPA or Bisphenol A is a chemical found in plastic water bottles. It has been linked to a host of ailments including increased risk of cancer, obesity, early onset puberty, and diabetes. While many plastic products contain BPA replacements, we don't want to find out 10 years from now that those aren't safe either. There is no BPA in your bkr and we don't put a BPA replacement in it either. bkr is 100% recyclable.
Clean your bkr with hot soapy water or on the top rack of your dishwasher. The sleeve is dishwasher safe and does not need to be removed, but it's easy to slip off if you want to. We recommend storing your bkr with the cap off. Your bkr bottle is made of soda-lime glass—it's durable and protected by a soft silicone sleeve, but it is still glass—so treat it carefully as you would your cell phone or any other thing you love. Please avoid freezing, using in the microwave, or exposing to sudden temperature changes. If you freeze your bkr or leave it in your car in freezing temperatures, the water will expand and the glass will break. It will break your heart. Trust us on this.