Contigo · Insulated Drink Tumblers
Contigo Byron 2.0 Stainless Steel Travel Mug Snapseal
Stainless steel travel mug with no coating on record.
Contigo Byron 2.0 is stainless steel construction with a silicone gasket and lacks known PFAS coating requirements. Contigo does not disclose PFAS status, but the material itself carries lower risk than nonstick or water-resistant products.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel, silicone gasket
Lab data
No public lab test
What Contigo Byron 2.0 Stainless Steel Travel is made of, ingredients and materials
The Byron 2.0 uses food-grade stainless steel (typically 18/8 or similar) as its primary material, which is chemically inert and does not leach metals under normal use. The Snapseal lid incorporates a silicone gasket to create an airtight seal; food-grade silicone is heat-stable and non-reactive with beverages. Unlike ceramic-coated or plastic-lined travel mugs, stainless steel avoids risks from coating degradation or BPA/BPS leaching.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Silicone gasket degradation
Silicone gaskets can develop odor or harbor bacterial growth if not cleaned regularly or stored damp. This is not a material toxicity risk but a hygiene issue requiring maintenance.
Thermal stress cracking
Repeated exposure to extreme temperature cycling (boiling water followed by freezer) can cause hairline cracks in stainless steel over years of use, though this is a durability rather than safety issue.
Lid seal failure and contamination
If the Snapseal mechanism weakens or the gasket deteriorates, the mug may not seal properly, risking spillage and exposure to airborne contaminants if stored open.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Stainless steel leaching
Food-grade stainless steel (18/8) does not leach nickel, chromium, or iron at pH levels of typical beverages (coffee, tea, water). No recalls or documented cases for the Byron 2.0.
The full breakdown
The brand's record and disclosure
Contigo has no widely publicized safety certifications (such as NSF or FDA clearance statements) prominently displayed in marketing materials, and the company has not issued transparency reports on PFAS use in gaskets or manufacturing. The brand maintains a general stance on food contact suitability but does not disclose detailed material sourcing or testing protocols. No major product recalls for the Byron line have been issued in available public records.
How it compares in its category
Stainless steel travel mugs show lower concern in the category compared to ceramic glazes (which may contain lead/cadmium) and plastics (which may leach additives). The silicone gasket is a common choice across brands and generally regarded as low-risk when food-grade. Compared to double-walled plastic or resin-coated alternatives, the Byron 2.0 avoids off-gassing and thermal degradation issues.
If you buy it
Hand-wash the silicone gasket regularly to prevent mold or bacterial biofilm buildup in the seal crevices, especially after hot beverages. Do not expose the gasket to prolonged boiling water (over 100 degrees Celsius repeatedly), as silicone can degrade faster under extreme heat cycling. Replace the gasket annually or if you notice persistent odors, discoloration, or loss of seal integrity. Avoid dishwashers for the gasket to extend its lifespan.
What we don’t know
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Contigo has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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More insulated drink tumblers grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.