Ello · Insulated Drink Tumblers
Ello Serene Bloom Tumbler
Low risk. Standard BPA-free plastic shows no known PFAS use.
Ello's tumbler uses Tritan copolyester plastic with no documented PFAS additives. The brand doesn't disclose PFAS status, but this material carries lower inherent risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
BPA-free plastic (Eastman Tritan copolyester)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ello Serene Bloom Tumbler is made of, ingredients and materials
The Ello Serene Bloom Tumbler is made from Eastman Tritan copolyester, a hard plastic copolymer designed as a BPA-free and BPS-free alternative to polycarbonate. Tritan does not leach estrogenic compounds during normal use because it lacks the bisphenol backbone found in older plastics. The material is rigid, thermally stable up to about 100°C (212°F), and approved by the FDA for food contact, making it suitable for hot and cold beverages.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Microplastic shedding from degradation
All rigid plastics can gradually shed microparticles if scratched, flexed repeatedly, or exposed to UV and heat stress over years. Tritan is relatively durable, but long-term heavy use (dishwasher cycling, sun exposure) may increase particle release. Risk is low under recommended care but not zero.
Thermal stress and polymer breakdown
Repeated exposure to boiling water or thermal cycling can accelerate Tritan degradation and increase risk of micro-leaching. Keeping use below manufacturer guidance (typically 100°C) and avoiding dishwasher heat substantially mitigates this concern.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
BPA & bisphenols
Eastman Tritan copolyester is formulated without bisphenol monomers. Ello's labeling is consistent with third-party confirmations that this material does not release estrogenic compounds under normal use conditions.
Source, FDA ↗Phthalate contamination
Tritan copolyester does not use phthalate plasticizers. No evidence of phthalate additives in standard Ello tumbler formulations.
Coating or color additive migration
The Serene Bloom design includes printed or dyed decoration. FDA-approved food-contact inks and dyes used in mainstream tumblers are generally stable, but no specific testing results for this product's finish are publicly available. Standard Ello products have no reported migration incidents.
The full breakdown
The brand's record and disclosure
Ello explicitly markets this tumbler as BPA-free, which is accurate and verifiable. The brand does not make public commitments or disclosures regarding PFAS avoidance, but this is typical of consumer drinkware manufacturers and does not indicate use. No recalls, safety controversies, or third-party testing failures are on record for this product line. Ello is owned by Novelty Inc., a subsidiary of Helen of Troy Limited, a company with standard consumer product compliance practices.
How it compares in its category
Tritan copolyester is one of the most widely adopted BPA-free rigid plastics for food-contact drinkware and ranks favorably against borosilicate glass (breakage risk), stainless steel (potential nickel leaching if damaged), or older polycarbonate designs (BPA/BPS). Ello tumblers are comparable in safety profile to competitors like Contigo, OXO, and Hydro Flask plastic models. The main trade-off versus glass is lower thermal shock resistance and potential scratching over years of use.
If you buy it
Do not expose to boiling water or dishwashers on high heat cycles; hand wash or use gentle machine cycles to preserve the coating and prevent warping. Inspect regularly for visible scratches, cloudiness, or discoloration; minor frosting is cosmetic but deep scratches may harbor bacteria and warrant replacement after 2-3 years of heavy use. Avoid prolonged contact with very hot liquids above 100°C and acidic beverages (citrus, vinegar) if stored for extended periods, as these can gradually stress the polymer. Store out of direct sunlight to slow plastic degradation.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Ello has made none
Formulations change between production runs, so check the current label. How we grade.
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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.