Ello · Insulated Drink Tumblers
Ello Oasis Go+ 32oz Tumbler with Top Handle and Retracting Straw
Reusable plastic tumbler, lower PFAS concern but no verification available.
Ello's drinkware uses standard food-grade plastics without obvious PFAS-prone coatings. No brand disclosure on PFAS, but material type suggests lower risk than treated fabrics or nonstick cookware.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Plastic tumbler (BPA-free, likely polypropylene or similar)
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 Oasis Go+ is constructed from food-grade plastic, marketed as BPA-free, likely polypropylene (PP) or a similar commodity plastic. Polypropylene is considered one of the safer commodity plastics for food contact because it does not leach BPA, BPS, or phthalates under normal use conditions. The tumbler includes a silicone straw and rubberized top handle; silicone is inert and does not off-gas at typical beverage temperatures. The main durability concern is coating degradation on the interior or exterior finish over time, which can expose base plastic.
The brand's record and disclosure
Ello (owned by Copco/Helen of Troy) maintains a low public profile on chemical safety disclosures and has not published third-party certifications (NSF, BPA-free verification by independent lab) that are readily available in product literature. No major safety recalls or legal actions against Ello drinkware appear in public FDA or CPSC records. The brand's silence on PFAS and detailed material sourcing is typical for mid-market reusable drinkware manufacturers but represents a gap in transparency compared to premium competitors.
How it compares in its category
Reusable plastic tumblers like this occupy the middle ground between disposable single-use cups (higher environmental burden) and stainless-steel or glass alternatives (higher cost, breakage risk). This product is comparable to Contigo, Rubbermaid, and OXO entry-level models in materials and safety profile. It lacks the third-party certifications or recycled-content claims of higher-end brands, but also avoids premium pricing and associated greenwashing.
If you buy it
Do not fill with liquids hotter than 140-160°F (60-70°C); check the manufacturer's guidance for safe temperature range to avoid plastic degradation. Hand-wash the straw and lid after each use to prevent bacterial biofilm growth in crevices; do not leave standing water inside. Replace the tumbler if the interior coating becomes visibly scratched, peeling, or cloudy, as this may signal leaching risk. Keep away from direct sunlight for extended periods, as UV exposure can degrade plastic over years of outdoor use.
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.”
BPA and related bisphenols (BPA/BPS)
Product is marketed as BPA-free. No recalls or test data indicating leaching of BPA or BPS have been reported for Ello tumblers. Polypropylene (PP) does not naturally contain or leach bisphenols under normal beverage use.
Phthalates
Polypropylene does not require phthalate plasticizers. No independent or recall data suggests phthalate contamination in this product line. Silicone straw and rubber components are not typically phthalate sources if manufactured to food-contact standards.
Coating degradation and leachate exposure
Reusable plastic tumblers often feature interior coatings (lacquers, liners) to improve durability and aesthetics. Ello does not publicly disclose the composition of interior finishes. Scratching, peeling, or prolonged hot-liquid exposure could release coating compounds into beverages, but risk is low if tumbler is inspected and replaced when worn.
Microplastics from wear and breakdown
Repeated thermal cycling, abrasion from drinking and cleaning, and UV exposure can cause microscopic plastic particles to shed from the tumbler walls and lid. The degree of shedding in Ello products is not quantified in published studies, but is a general risk for long-lived single-material plastic drinkware.
Bacterial and mold growth in retracting straw mechanism
The retractable straw design creates narrow crevices and sealed areas where moisture and food residue can accumulate if not thoroughly cleaned after each use. Standing water in the straw housing increases risk of biofilm and mold colonization, a hygiene rather than chemical 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.