Vacuum Insulated Travel Mug with Handle vs Rambler 24 oz Mug with Ceramic Lining: which is safer?
Rambler 24 oz Mug with Ceramic Lining is our pick, better on PFAS and on the overall hazard picture.
S'well
Vacuum Insulated Travel Mug with Handle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePlastic cap/handle thermal migration
PossibleUndisclosed polymer type and additives in handle/cap
PossibleVacuum seal degradation and mold growth
Our pick
Yeti
Rambler 24 oz Mug with Ceramic Lining
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCeramic coating degradation over time
PossibleBacterial growth in crevices or damaged coating
PossibleThermal shock or fracture
Where these two actually differ
- We flag Plastic cap/handle thermal migration, Undisclosed polymer type and additives in handle/cap, Vacuum seal degradation and mold growth and No third-party safety or PFAS testing disclosed on the S'well and not on the Yeti.
- We flag Ceramic coating degradation over time, Bacterial growth in crevices or damaged coating and Thermal shock or fracture on the Yeti and not on the S'well.
- The S'well is Stainless steel body, plastic handle and cap where the Yeti is stainless steel exterior, ceramic lining interior, which is most of the difference in these two grades.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More insulated travel mugs, see the full ranking