Do MiiR insulated drink tumblers have PFAS?
MiiR insulated drink tumblers average 78 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 MiiR insulated drink tumblers graded as of October 2026, above the 72 out of 100 median for the 26 other insulated drink tumblers brands graded alongside it.
MiiR insulated drink tumblers average Excellent on our four-band scale. 4 of the 4 we graded are worth buying. That is above 87% of the insulated drink tumblers brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
MiiR insulated drink tumblers worth buying Good or better, best-graded first
- Stainless steel body, vacuum insulation
- We found no PFAS statement from the brand
- Seal and gasket material degradation. Lid gaskets are typically silicone or rubber; prolonged exposure to hot…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel interior, vacuum insulation, unspecified lid/exterior coating
- We found no PFAS statement from the brand
- Lid coating or sealant composition (unspecified). The exterior coating and lid material are not specified in…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel tumbler with silicone grip
- We found no PFAS statement from the brand
- Stainless steel nickel leaching. Nickel content in 18/8 stainless steel can leach in trace amounts if the…
2 hazards checked on this product, all on its full breakdown.
- Stainless steel with powder-coated finish
- We found no PFAS statement from the brand
- Powder-coat durability and adhesion, REI Co-op product pages do not specify powder-coat adhesion standards or…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonBetter insulated drink tumblers from other brands
Graded higher than the MiiR average of 78.
- Stainless steel bottle, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time
3 hazards checked on this product, all on its full breakdown.
- Stainless steel body, powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, plastic cap and silicone gasket
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation and leaching
3 hazards checked on this product, all on its full breakdown.
The same question, asked of the other insulated drink tumblers brands
Best average grade first. MiiR averages 78.
See every MiiR product we grade on the MiiR brand page, or the full insulated drink tumblers ranking.