Rambler Tumbler YETI vs Rambler Jr. 10 oz Tumbler with Straw Lid: which is safer?
Rambler Tumbler YETI is the clear pick. YETI Rambler Jr. 10 oz Tumbler with Straw Lid carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Yeti
Rambler Tumbler YETI
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleNickel leaching from stainless steel
Yeti
Rambler Jr. 10 oz Tumbler with Straw Lid
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBPA or BPS in plastic lid/straw
PossiblePhthalates in plastic components
ReportedPFAS in lid/straw coating or water-repellent finish
Where these two actually differ
- We flag Nickel leaching from stainless steel on the Yeti and not on the Yeti.
- We flag BPA or BPS in plastic lid/straw, Phthalates in plastic components, PFAS in lid/straw coating or water-repellent finish and Plastic degradation and microparticle release under thermal stress on the Yeti and not on the Yeti.
- The Yeti is 18/8 stainless steel, no coating where the Yeti is stainless steel interior with plastic lid and straw, which is most of the difference in these two grades.
Both products run through the same public rubric: 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 drink tumblers & travel mugs: see the full ranking