Superior 2.0 Travel Mug 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.
Contigo
Superior 2.0 Travel Mug
PFAS grade
Good 70/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
Vacuum-insulated stainless steel
Confidence
35%
PossibleSilicone gasket degradation and microbial growth
Our pick
Yeti
Rambler 24 oz Mug with Ceramic Lining
PFAS grade
Excellent 85/100
Overall grade
Good 73/100
Verdict
Buy
Hazard flags
⚑ 3
Material
stainless steel exterior, ceramic lining interior
Confidence
72%
PossibleCeramic coating degradation over time
PossibleBacterial growth in crevices or damaged coating
PossibleThermal shock or fracture
Where these two actually differ
- We flag Silicone gasket degradation and microbial growth on the Contigo 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 Contigo.
- The Contigo is Vacuum-insulated stainless steel where the Yeti is stainless steel exterior, ceramic lining interior, which is most of the difference in these two grades.
- We are less certain about the Contigo grade, at 35% confidence against 72%, because it discloses less.
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