Ello · Insulated Drinkware Tumblers
Ello 30oz Stainless Steel Handled Tumbler 2pk Lemon/Blue Stripe
Lower concern. Bare stainless steel tumbler, no special coatings disclosed.
Stainless steel tumblers have no inherent PFAS risk from the base material. Ello makes no PFAS claims, but bare metal construction typically avoids fluorinated coatings.
Shop Ello on Amazon →Material
Stainless steel, no disclosed coating or treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
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
This tumbler is constructed from stainless steel, a corrosion-resistant iron-chromium alloy that does not require protective coatings or linings. Unlike ceramic or non-stick alternatives, bare stainless steel does not degrade into the beverage and poses negligible leaching risk under normal use. The handle and lid components are not specified in publicly available product details, but stainless steel hardware typically carries minimal contamination concern.
The brand's record and disclosure
Ello is a consumer drinkware brand owned by Smash Goods. The company does not publish detailed material safety documentation or third-party certifications (e.g., FDA food-contact verification, lead testing) on its website or product pages. No recalls or reported contamination incidents for this specific tumbler model have been documented in FDA or CPSC databases. The brand's silence on PFAS and heavy metals testing reflects industry-standard lack of transparency rather than confirmed use of hazardous substances.
How it compares in its category
Stainless steel tumblers are among the safest reusable drinkware options, with no coating degradation, off-gassing, or BPA concerns. They compare favorably to plastic tumblers (potential BPA/phthalates if heated) and ceramic/enamel alternatives (lead or cadmium in glazes if quality-control is poor). Price and brand reputation place this product in the mid-market tier; comparable unbranded stainless tumblers carry similar material safety profiles.
If you buy it
Hand-wash or use a dishwasher; stainless steel is durable and tolerates both. Avoid abrasive scrubbers that can scratch the surface, though minor surface marks do not compromise safety. Replace the lid gasket or seals if they crack or degrade, as these contact the beverage. For hot liquids, verify the handle does not conduct excessive heat by checking the lid design; most stainless tumblers with plastic or rubber handles perform adequately for this task.
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.”
Lid or handle material composition
The tumbler's lid and handle materials are not publicly disclosed. If these components contain plastic (e.g., polypropylene or silicone) or rubber, they could leach or off-gas under hot-liquid or dishwasher conditions, though this is not typical for food-grade alternatives used by this brand.
Chromium leaching from stainless steel
Bare stainless steel in neutral pH or acidic beverage conditions (coffee, juice) does not leach chromium at detectable levels under normal use. No incidents of chromium contamination from Ello tumblers have been reported in public safety databases.
Bacterial growth or biofilm in seams
Like all reusable tumblers with joined or seamed construction, this product can harbor bacteria if not thoroughly dried or if seams trap moisture. This is a maintenance issue, not a material defect, and is mitigated by proper hand-washing and air drying.
Nickel sensitization from stainless steel contact
Stainless steel typically contains 8-12 percent nickel. Individuals with nickel allergy may experience skin irritation from prolonged contact with the handle. This risk is individual, not product-specific, but should be considered by nickel-sensitive users.
Surface degradation or rust over time
Food-grade stainless steel (usually 304 or 316 alloy) resists corrosion and rust under normal beverage use. No widespread reports of premature rust or pitting in Ello tumbler products are documented, suggesting adequate material quality control.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 82% 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.
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.