Ello · Insulated Drinkware Tumblers
Ello Port 30oz Tumbler with Carry Loop & Integrated Handle
Lower concern. Stainless steel core unlikely PFAS source.
Ello tumbler is primarily stainless steel, a lower-risk material. Lid and handle polymers are unspecified, but tumblers rarely undergo water-resistant treatments that require PFAS.
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Stainless steel tumbler with plastic/elastomer lid and carry loop
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 Ello Port is built around a stainless steel double-wall core, which is chemically inert and does not leach metals or require coating maintenance. The lid and carry loop are elastomer or plastic (likely silicone or polypropylene based on typical Ello designs), which contact only cold or warm beverages, not hot liquids at risk of degradation. The seal gasket is the primary plastic-contact point and warrants inspection for visible wear, but stainless steel avoids the coating-failure and metal-leaching risks of ceramic or aluminum-core tumblers.
The brand's record and disclosure
Ello does not publish detailed material safety data sheets or third-party certifications for individual products on its website. The brand has no widely documented safety recalls or chemical controversies in public databases as of recent records. However, lack of transparency on plastic component composition and sourcing limits independent verification of elastomer or BPA/BPS status in lid and gasket materials.
How it compares in its category
Stainless steel tumblers are among the safest in the reusable drinkware category because they eliminate coating degradation and metal leaching entirely. Most competitors (ceramic-lined, powder-coated metal, or plastic-walled alternatives) carry higher risk profiles for lead in glaze, Teflon-type coating off-gassing, or BPA migration. The Ello Port's main trade-off versus higher-end alternatives is less rigorous public disclosure of plastic component sourcing.
If you buy it
Hand wash the lid and gasket to extend seal integrity and avoid plastic stress from high heat or dishwasher cycles. Inspect the gasket and lid seams quarterly for cracks, discoloration, or odor, which signal degradation and warrant replacement. Do not fill with beverages above 140F (60C) to minimize any thermal stress on plastic components. The stainless steel body itself is durable indefinitely; plan to replace the lid assembly every 1-3 years depending on use frequency.
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/elastomer lid and gasket composition
Ello does not publicly disclose whether the lid elastomer or gasket contains BPA, BPS, or phthalates. Silicone and polypropylene are typically low-risk, but sourcing and additives are not detailed in available product information.
Gasket and seal degradation over time
Elastomer or plastic gaskets may degrade, crack, or leach compounds if stressed by heat, freezing, or repeated dishwasher cycles. Visual inspection every few months is a practical early-warning step.
Metal leaching from stainless steel
Food-grade stainless steel (typically 18/8 or 18/10 alloy) does not leach nickel, chromium, or other metals under normal beverage storage conditions. No public reports of leaching from Ello or comparable stainless steel tumblers exist.
Coating or finish failure
Stainless steel has no applied ceramic, enamel, or paint coating, so no coating-peeling, lead-glaze, or Teflon-type coating off-gassing risks apply to the vessel itself.
Carry loop and attachment durability
The integrated carry loop is often silicone or elastomer and may crack or degrade under repeated tension or UV exposure. Replacement is straightforward but not always sold as a standalone part.
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.