Contigo · Insulated Drinkware Tumblers
Contigo Streeterville Tumbler
Likely lower concern, but Contigo offers no PFAS transparency.
Stainless steel tumblers are generally lower PFAS risk. Contigo does not disclose PFAS information for this product. Contact brand for lid material specifics if concerned.
Shop Contigo on Amazon →Material
Stainless steel with plastic lid
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 Streeterville is constructed from food-grade stainless steel (typically 18/8 or 304 grade) for the body, which is chemically inert and does not leach metals into beverages under normal use. The lid and seal are plastic, most likely polypropylene (PP) or polyethylene terephthalate (PET) based on Contigo's product line conventions; these materials are stable at typical drinking temperatures. Stainless steel tumblers avoid the aluminum leaching risk of bare aluminum cups and the Teflon-type coating fume hazard of non-stick coatings found in traditional cookware.
The brand's record and disclosure
Contigo has not published specific PFAS testing data or commitments, placing it in the silent middle ground of beverage container makers. The brand has no major documented recalls or safety controversies in the tumbler category on public record. Third-party certifications (such as BPA-free labeling) are sometimes present on packaging but are inconsistently highlighted across product lines; verification of specific batch claims requires checking the individual product label or contacting customer service.
How it compares in its category
Insulated stainless steel tumblers like the Streeterville are among the safer reusable beverage containers, avoiding plastics-only construction and coating degradation issues. Compared to ceramic mugs (which may contain lead in vintage glazes or cadmium in colored enamels) and glass (breakage risk), this tumbler ranks favorably. Against brands that explicitly commit to PFAS-free certification (such as some Hydro Flask models), Contigo's silence on the issue is a relative weakness, though not a confirmed hazard.
If you buy it
Rinse the interior and lid thoroughly before first use to remove any manufacturing residue. Use with cold to warm beverages (under 140°F / 60°C) to avoid stressing plastic seals; do not fill with boiling water repeatedly. Inspect the plastic lid and gasket annually for cracks, discoloration, or wear; replace if visible damage occurs, as degraded seals can allow mold growth in the seal channel. Hand-wash rather than run through the dishwasher if possible, as repeated high heat can degrade the lid's plastic.
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.”
Plastic lid degradation and seal contamination
The plastic lid and rubber gasket are durability weak points in insulated tumblers. Over time and with repeated washing, these components can crack, discolor, or become brittle, potentially allowing bacterial or mold colonization in the seal channel if not cleaned regularly.
BPA or BPS in plastic lid
Contigo does not explicitly label the Streeterville as BPA-free on public sources reviewed. Modern polypropylene lids typically do not require BPA, but absence of a clear statement on the product or packaging leaves this unconfirmed for this specific model.
Microbial growth in seal and drinking spout
Insulated tumbler lids with silicone gaskets and valve mechanisms are known to harbor mold and bacteria if not disassembled and dried thoroughly between uses. The Streeterville's leak-proof design may trap moisture and organic matter in crevices difficult to access with standard hand-washing.
Stainless steel material integrity
Food-grade stainless steel (18/8) does not leach iron, chromium, or nickel into cold or warm beverages under normal conditions. No recalls or contamination reports are on record for Contigo stainless steel tumblers in this respect.
Coating or lining degradation
Unlike non-stick cookware, the Streeterville uses bare stainless steel with no Teflon-type coating or ceramic interior coating, eliminating fume or flaking risks from coating breakdown over time.
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 Drinkware Tumblers
Contigo
Byron 2.0 Stainless Steel Travel Mug Snapseal
Stainless steel, silicone gasket
Travel mug with lower PFAS concern; stainless steel typically safe.
✓Bare metal or glass, no coating at all
Thermos
Stainless King Travel Tumbler
Stainless steel exterior, vacuum-insulated, minimal internal coating
Lower concern. Stainless steel tumbler with standard design, no PFAS-prone features.
✓Bare metal or glass, no coating at all
Thermos
Stainless Steel Tumbler w/ Slide Lock Lid
Stainless steel tumbler with plastic slide lock lid
Lower concern. Stainless steel is PFAS-free; monitor lid material.
✓Bare metal or glass, no coating at all
More insulated drinkware 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.