Yeti Review, Is Yeti Non-Toxic?
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.
Across 8 graded products, Yeti averages Good (67/100). On disclosure, the brand says nothing publicly about PFAS. 1 of its products grade Good or better. Grades are model-based estimates, not lab results.
Does Yeti have PFAS, by category
Worth buying from Yeti Good or better, safest first
Yeti
Rambler Tumbler YETI
18/8 stainless steel, no coating
Nickel leaching from stainless steel
18/8 stainless steel contains 8% nickel, which can migrate into acidic or high-salt…
Low risk. Bare stainless steel tumbler with no known PFAS risk.
⚠Risky category by default
Graded and flagged Poor and Bad, we’d swap these
Yeti
Rambler Stackable Cup with MagSlider Lid
Stainless steel body, elastomer lid seal
Elastomer lid degradation
Silicone and elastomer seals can degrade or leach trace compounds over years of thermal…
Microplastic or polymer fragments
The elastomer seal could theoretically shed microscopic fragments under repeated thermal…
Low-Medium risk. Stainless steel cup has no known PFAS risks.
⚠Risky category by default
Yeti
Rambler Jr. 10 oz Tumbler with Straw Lid
stainless steel interior with plastic lid and straw
BPA & bisphenols
YETI does not claim the lid or straw is BPA-free on product labels or website. The resin…
Phthalates
Softening agents (phthalates) are sometimes used in plastic lids and straws for…
PFAS
YETI's parent assessment grades PFAS at 65/100 (lower concern) but the company discloses…
Plastic degradation and microparticle release under thermal stress
Repeated exposure to hot water or dishwasher cycles can cause plastic lids and straws to…
Low-Medium risk. YETI discloses nothing about PFAS in lids.
⚠Risky category by default
Yeti
Rambler Stackable Cup 20 oz. Rescue Red
18/8 stainless steel interior and exterior
Nickel sensitivity from stainless steel contact
Individuals with severe nickel allergies may experience contact dermatitis from prolonged…
Low-Medium risk. Stainless steel drinkware rarely contains PFAS.
⚠Risky category by default
Yeti
Rambler 20 oz Stackable Cup
Stainless steel cup body
Silicone gasket degradation and microbial growth
Gaskets in insulated lids can harbor mold or bacterial biofilm if not dried thoroughly…
Low-Medium risk. Stainless steel cup with no known PFAS risk. Brand silent on PFAS.
⚠Risky category by default
Yeti
Rambler 12 oz Travel Bottle
Stainless steel interior, vacuum insulated, plastic/rubber components
Plastic/rubber seal degradation and bacterial growth
The lid gasket and threaded seal are the only polymer components in prolonged contact…
BPA & bisphenols
YETI does not publicly disclose whether the polypropylene or acrylic lid/cap meets…
Low-Medium risk. Stainless steel core unlikely PFAS source.
⚠Risky category by default
Yeti
Rambler 26 oz Bottle Straw Cap
Stainless steel bottle, plastic straw cap
Plastic cap degradation and microplastic shedding
Repeated thermal cycling and contact with acidic or hot beverages may cause the…
Plastic cap material identity and phthalate risk
Yeti does not publicly disclose the exact plastic resin or additives in the cap. Most…
Bacterial growth in cap or seals
The straw cap design includes crevices and rubber or silicone seals that can harbor…
Low-Medium risk. Stainless steel and hard plastics pose minimal PFAS risk.
⚠Risky category by default
Yeti
Rambler 18 oz Water Bottle with Straw Cap in Cape Taupe
18/8 stainless steel interior and exterior with plastic straw cap
Plastic cap material identity and leaching
Yeti does not specify the plastic resin type or disclose testing for BPA, BPS, or…
Bacterial and mold growth in cap and straw
Straw caps trap moisture and are difficult to dry completely; users report mold growth if…
Cap degradation and microplastic shedding
Plastic caps wear with repeated opening, closure, and dishwasher exposure. Visible cracks…
Low-Medium risk. Stainless steel bottle unlikely to contain PFAS, but cap not disclosed.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →