Insulated Drink Tumblers & Travel Mugs, ranked by PFAS safety
15 products graded from Bad to Excellent, safest first. 3 grade Good or better and are worth buying.
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The best non-toxic insulated drink tumblers & travel mugs, ranked safest first
Bad · Better · Best insulated drink tumblers & travel mugs
The quickest read, what to skip and the top-graded picks worth buying instead.
Contigo
Contigo Superior 2.0 Travel Mug
High risk. Skip until Contigo discloses interior coating composition.
Contigo
Contigo Autoseal West Loop Stainless Steel Travel Mug
Low-Medium risk. Stainless steel and silicone have minimal PFAS risk.
Yeti
Rambler Tumbler YETI
Low risk. Bare stainless steel tumbler with no known PFAS risk.
Worth buying Good or Excellent, safest first
Yeti
Rambler Tumbler YETI
18/8 stainless steel, no coating
Nickel leaching from stainless steel
Limited concern
Low risk. Bare stainless steel tumbler with no known PFAS risk.
⚠Risky category by default
Contigo
Autoseal West Loop Stainless Steel Travel Mug
stainless steel body, silicone gasket/lid seal
Silicone gasket degradation and bacterial/mold colonization
Limited concern
Low-Medium risk. Stainless steel and silicone have minimal PFAS risk.
⚠Risky category by default
Contigo
Cortland Chill 2.0 Stainless Steel Water Bottle
stainless steel, no reported coating
Gasket and seal degradation
Limited concern
Bacterial growth in inaccessible spaces
Limited concern
Thermal stress and seal failure
Limited concern
Low-Medium risk. Bare stainless steel bottle with no known problematic coatings.
⚠Risky category by default
Graded and flagged Poor and Bad, we’d swap these
Contigo
Byron 2.0 Insulated Travel Mug
Stainless steel exterior, BPA-free plastic lid and interior
Phthalates
Limited concern
Stainless steel nickel leaching
Limited concern
Microplastics
Limited concern
Low-Medium risk. Stainless steel body is unlikely to hold PFAS.
⚠Risky category by default
Contigo
West Loop 3.0 Stainless Steel Travel Mug with AUTOSEAL Lid
stainless steel, polymer lid
PFAS
Limited concern
Silicone gasket degradation and leaching
Limited concern
Acetal or polypropylene lid aging and heat degradation
Limited concern
Bacterial or mold growth in sealed mechanism
Limited concern
Low-Medium risk. Stainless steel body poses lower concern; lid polymer unspecified.
⚠Risky category by default
Contigo
West Loop 2.0 Travel Mug 2-Pack
Stainless steel exterior, plastic interior lid/valve
Plastic lid and valve wear/leaching
Limited concern
Bacterial or mold growth in valve mechanism
Moderate concern
Low-Medium risk. Stainless travel mug with no PFAS disclosure required.
⚠Risky category by default
Yeti
Rambler Stackable Cup with MagSlider Lid
Stainless steel body, elastomer lid seal
Elastomer lid degradation
Limited concern
Microplastic or polymer fragments
Limited concern
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
Limited concern
Phthalates
Limited concern
PFAS
Moderate concern
Plastic degradation and microparticle release under thermal stress
Limited concern
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
Limited concern
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
Limited concern
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
Limited concern
BPA & bisphenols
Limited concern
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
Limited concern
Plastic cap material identity and phthalate risk
Limited concern
Bacterial growth in cap or seals
Limited concern
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
Limited concern
Bacterial and mold growth in cap and straw
Moderate concern
Cap degradation and microplastic shedding
Limited concern
Low-Medium risk. Stainless steel bottle unlikely to contain PFAS, but cap not disclosed.
⚠Risky category by default
Contigo
West Loop 2.0 Leak-Proof Spill-Proof Insulated Travel Mug
Stainless steel with unspecified waterproof/leak-proof coating
PFAS
High concern
Silicone gasket degradation and leaching
Limited concern
Mold and bacterial growth in insulation cavity
Limited concern
Coating wear and microparticle shedding
Limited concern
High risk. Skip until Contigo discloses leak-proof coating composition.
⚠Waterproof or stain-proof treatment
Contigo
Superior 2.0 Travel Mug
stainless steel with unspecified interior coating
PFAS
Limited concern
Coating degradation and microplastic/particulate release
Limited concern
Off-gassing from coating under heat stress
Limited concern
High risk. Skip until Contigo discloses interior coating composition.
⚠Nonstick, coating undisclosed
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