RTIC · Insulated Drink Tumblers
Rtic 20 oz Ceramic Lined Everyday Tumbler
Lower concern; ceramic lining inherently avoids PFAS, no known issues.
Ceramic-lined tumblers are inherently PFAS-free since ceramic does not require fluorinated coatings. RTIC makes no PFAS claims but the material choice itself poses lower risk than nonstick or treated alternatives.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Ceramic interior lining, stainless steel body
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The RTIC 20 oz tumbler pairs a stainless steel exterior with a ceramic interior coating. Ceramic is chemically inert at normal use temperatures and does not leach metals or synthetic chemicals into beverages, making it a safer alternative to plastic liners or uncoated metals. Stainless steel (typically 18/8 grade) is stable and does not release problematic amounts of chromium or nickel under normal drinking conditions. The ceramic-stainless combination sidesteps many hazards associated with non-stick coatings or epoxy-based linings.
The brand's record and disclosure
RTIC does not publicly disclose detailed material safety documentation or third-party certifications (e.g., NSF, BPA-free labeling) for this product. The brand maintains a silent stance on PFAS and has no known recalls or safety controversies on record for this tumbler line. Without active transparency, independent verification of ceramic composition and any additives in the glaze is unavailable, though the material class itself carries low inherent risk.
How it compares in its category
Ceramic-lined tumblers are considered a safer middle ground compared to plastic-lined alternatives (which may contain BPA or phthalates) or metal tumblers with epoxy or non-stick coatings (which carry fume and degradation risks). RTIC's ceramic offering is comparable to brands like Yeti and Hydro Flask in material safety profile, though those brands often provide stronger sustainability or third-party testing claims. The ceramic lining approach is less common than plastic or non-stick coatings, placing it in a lower-risk subset of the reusable tumbler market.
If you buy it
Hand wash the tumbler to avoid high dishwasher heat that could stress the ceramic bond over many cycles. Do not microwave or expose to extreme temperature swings, which may cause the ceramic to crack or peel. Inspect the interior coating annually for chips or crazing; if the ceramic surface degradates significantly, replace the tumbler to avoid ingesting ceramic particles. Store dry and avoid prolonged contact with acidic beverages (citrus, vinegar) if the glaze is not fully food-safe certified, as this information is not disclosed by the brand.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Ceramic glaze additives and stability
RTIC does not disclose the ceramic glaze formulation. Some ceramic glazes historically contained lead or cadmium, though modern food-contact ceramics are often lead-free; without third-party certification, the composition of this tumbler's lining is unverified.
Coating degradation and ceramic flaking
Ceramic linings can chip, crack, or peel over time with heavy use, dishwasher cycles, or thermal stress. Users may inadvertently ingest ceramic particles if the interior is damaged and not replaced.
Stainless steel nickel and chromium leaching
Food-grade stainless steel (18/8) is stable in contact with drinking water and beverages at normal use temperatures. No known leaching issues reported for this product or category.
Adhesive or bonding agent toxicity between liner and body
The ceramic lining is bonded to the stainless steel body; RTIC does not disclose the adhesive or bonding process. If poorly formulated, adhesives could leach into beverages, especially with hot liquids or over time.
Microbial growth in lid seals or narrow spaces
Like all reusable tumblers, RTIC lids and threaded areas can harbor bacteria if not thoroughly dried and cleaned regularly. This is a use and maintenance issue rather than a material hazard.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Insulated Drink Tumblers
Reduce
Halo Tumbler
Stainless steel and plastic lid
Lower concern tumbler; stainless steel is inherently PFAS-safe.
✓Naturally PFAS-free material
Cuppa
To Go Tumbler
Stainless steel with plastic lid
Lower concern. Standard tumbler with no known PFAS risks.
✓Naturally PFAS-free material
Klean Kanteen
Steel Pint
18/8 stainless steel, bare metal
Lower PFAS concern. Bare stainless steel container, no coatings.
✓Bare metal or glass, no coating at all
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.