Klean Kanteen
Klean Kanteen Classic Stainless Steel Water Bottle
Where to Buy
About This Product
The Klean Kanteen Classic is made from 18/8 food-grade stainless steel, containing no BPA, BPS, phthalates, lead, or any other harmful chemicals. The single-wall construction is simple, durable, and virtually indestructible. Available in sizes from 12 oz to 64 oz, with options for different cap styles including a sport cap, loop cap, and bamboo cap. The wide mouth fits ice cubes and is easy to clean. Klean Kanteen was one of the original stainless steel water bottle companies, founded in 2004 with a mission to replace single-use plastic. All products are made from 90% recycled stainless steel and are certified climate neutral.
Why This Is Great for Thyroid Patients
Plastic water bottles — even reusable BPA-free ones — leach endocrine-disrupting chemicals into water, especially when exposed to heat or sunlight. Studies have found that BPA-free plastics release estrogenic chemicals that can interfere with thyroid hormone function. Stainless steel is completely inert and will never leach chemicals into your water regardless of temperature or time. For thyroid patients who are careful about water quality (using filtered water), it defeats the purpose to store that clean water in a plastic container that reintroduces chemical contaminants. A stainless steel bottle protects your investment in clean water from source to sip.
Key Features
- Food-grade stainless steel
- BPA/BPS-free
- Phthalate-free
- Lead-free
- Electropolished interior
- Multiple sizes
Selection Criteria
- Zero chemical leaching
- Durable
- Temperature neutral
- B-Corp certified
- Climate-neutral
- Multiple cap options
Evidence Level
Multiple high-quality studies support the use of this product for thyroid patients.