Rambler 24 oz Mug with Ceramic Lining vs Rambler Stackable Cup 20 oz. Rescue Red: which is safer?
Rambler 24 oz Mug with Ceramic Lining is our pick, better on PFAS and on the overall hazard picture.
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
Yeti
Rambler Stackable Cup 20 oz. Rescue Red
PFAS grade
Good 70/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
18/8 stainless steel interior and exterior
Confidence
78%
PossibleNickel sensitivity from stainless steel contact
Where these two actually differ
- 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 Yeti.
- We flag Nickel sensitivity from stainless steel contact on the Yeti and not on the Yeti.
- The Yeti is stainless steel exterior, ceramic lining interior where the Yeti is 18/8 stainless steel interior and exterior, 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