Non-Toxic Insulated Travel Mugs, ranked by PFAS grade

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Top-graded picks in the categories readers replace first, every one scored on the same rubric.

  • polypropylene filter housing, carbon/sediment cartridge
  • We found no PFAS statement from the brand
  • Bacterial growth in spent cartridges

3 hazards checked on this product, all on its full breakdown.

  • RO membrane, carbon filters, stainless steel housing
  • We found no PFAS statement from the brand
  • Bacterial and microbial growth in housing and filters

4 hazards checked on this product, all on its full breakdown.

Avocado Vegan Mattress

Avocado

Vegan Mattress

100ExcellentPFAS grade
✓ MADE SAFE Certified✓ Global Organic Textile Standard (GOTS)
  • organic cotton, natural latex, coconut coir, recycled steel coils
  • The brand calls it PFAS-free, which we have not verified
  • Heavy metals

2 hazards checked on this product, all on its full breakdown.

What we found
All 68 insulated travel mugs PFAS Authority has graded reach its 70 point pass mark for PFAS and other toxins, as of October 2026. The highest graded is Yeti Rambler 24 oz Mug with Ceramic Lining at 85 out of 100.

The full ranking is below, best-graded first, with every score linking to the evidence behind it.

Are insulated travel mugs safe?

68 of the 68 insulated travel mugs we graded come back low-concern on our screen and 0 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.

Best graded insulated travel mugs here

  1. 1Yeti Rambler 24 oz Mug with Ceramic Lining 85 out of 100
  2. 2Reduce Hot1 Travel Mug 85 out of 100
  3. 3Owala FreeSip Sway Stainless Steel 80 out of 100

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The best non-toxic insulated travel mugs, ranked by grade

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Buyer’s guide

What to look for in insulated travel mugs, and which brands grade best and worst

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Bad · Better · Best

Insulated Travel Mugs, ranked.

The quickest read, what to skip and the top-graded picks worth buying instead.

Avoid70Good
Contigo Superior 2.0 Travel Mug

Contigo

Superior 2.0 Travel Mug

70/100 safety

No coating described, and no PFAS statement from the brand.

Better80Excellent
Owala FreeSip Sway Stainless Steel

Owala

FreeSip Sway Stainless Steel

80/100 safety

Bare stainless steel water bottle presents lower PFAS concern.

Best pick85Excellent

Yeti

Rambler 24 oz Mug with Ceramic Lining

85/100 safety

Lower PFAS concern; ceramic lining is not associated with PFAS.

Why Yeti Rambler 24 oz Mug with Ceramic Lining wins, and what it beats

Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 1 product it beats, so you can see exactly where the 5 points between the top and the bottom of this insulated travel mugs ranking come from.

The winner

85Excellent
Yeti Rambler 24 oz Mug with Ceramic Lining

Made of stainless steel exterior, ceramic lining interior.

  • +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
  • +10Category baseline. The starting point for this type of product, before anything specific to this product is counted.
  • -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.

15risk points in total, which is a grade of 85

What the grade does not fix. It still carries one risk factor, No PFAS disclosure, and our graders recorded 3 other hazards on it. See the full breakdown.

What it beats, and why

Owala FreeSip Sway Stainless Steel
80Excellent5 points behind the winner
Owala FreeSip Sway Stainless Steel

What puts it behind. The winner earns -10 points for Base material not linked to PFAS. We found nothing comparable published for this product.

Made of Stainless steel body, no interior coating disclosed.

  • +25Category baseline
  • +15No PFAS disclosure
  • -20Bare uncoated material. Recorded as a bare, uncoated material with no surface coating or treatment.

20risk points, a grade of 80

No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.

Which insulated travel mugs are PFAS-free? Good or Excellent, best-graded first

Yeti

Rambler 24 oz Mug with Ceramic Lining

85ExcellentPFAS grade
  • stainless steel exterior, ceramic lining interior
  • Ceramic coating degradation over time

3 hazards checked on this product, all on its full breakdown.

Reduce

Hot1 Travel Mug

85ExcellentPFAS grade
  • Stainless steel body, plastic lid
  • We found no PFAS statement from the brand
  • Plastic lid polymer identity and leaching potential

3 hazards checked on this product, all on its full breakdown.

Owala FreeSip Sway Stainless Steel

Owala

FreeSip Sway Stainless Steel

80ExcellentPFAS grade
  • Stainless steel body, no interior coating disclosed
  • Silicone and plastic lid/valve leachables

3 hazards checked on this product, all on its full breakdown.

Owala Stainless Steel Straw Tumbler Route 66

Owala

Stainless Steel Straw Tumbler Route 66

80ExcellentPFAS grade
  • Stainless steel tumbler, bare uncoated
  • Coating degradation and microplastic shedding from exterior print

3 hazards checked on this product, all on its full breakdown.

  • stainless steel exterior, vacuum insulation, stainless steel interior
  • We found no PFAS statement from the brand
  • Nickel leaching from stainless steel

3 hazards checked on this product, all on its full breakdown.

Thermos Guardian Stainless Steel Mug

Thermos

Guardian Stainless Steel Mug

80ExcellentPFAS grade
  • Stainless steel (uncoated)
  • We found no PFAS statement from the brand
  • Bacterial growth in storage
Thermos Stainless Steel Mug

Thermos

Stainless Steel Mug

80ExcellentPFAS grade
  • stainless steel, no stated coating
  • We found no PFAS statement from the brand
  • Seam or lid leachables

2 hazards checked on this product, all on its full breakdown.

  • stainless steel, no reported coating
  • Gasket and seal degradation

3 hazards checked on this product, all on its full breakdown.

Owala FreeSip Stainless Steel Tumbler

Owala

FreeSip Stainless Steel Tumbler

80ExcellentPFAS grade
  • stainless steel tumbler, no stated coating
  • Silicone gasket degradation and ingestion

2 hazards checked on this product, all on its full breakdown.

  • Recycled stainless steel, no coating disclosed
  • Bacterial growth in seams or caps
Thermos 16oz Stainless King Coffee Mug

Thermos

16oz Stainless King Coffee Mug

80ExcellentPFAS grade
  • stainless steel interior, plastic exterior
  • We found no PFAS statement from the brand
  • Plastic exterior degradation and leachates

3 hazards checked on this product, all on its full breakdown.

Thermos Icon 16 oz Stainless Steel Mug

Thermos

Icon 16 oz Stainless Steel Mug

80ExcellentPFAS grade
  • stainless steel, no stated interior coating
  • We found no PFAS statement from the brand
  • Seal degradation and bacterial growth

2 hazards checked on this product, all on its full breakdown.

Thermos Icon 16 oz Stainless Steel Tumbler

Thermos

Icon 16 oz Stainless Steel Tumbler

80ExcellentPFAS grade
  • Stainless steel interior, BPA-free plastic exterior
  • We found no PFAS statement from the brand
  • Plastic exterior degradation and microplastic shedding

2 hazards checked on this product, all on its full breakdown.

THERMOS Stainless Steel King Travel Mug

Thermos

Stainless Steel King Travel Mug

80ExcellentPFAS grade
  • Stainless steel interior and exterior, plastic lid
  • We found no PFAS statement from the brand
  • Plastic lid polymer degradation

3 hazards checked on this product, all on its full breakdown.

  • stainless steel body, silicone gasket/lid seal
  • Silicone gasket degradation and bacterial/mold colonization
Owala 40oz Stainless Steel Straw Tumbler

Owala

40oz Stainless Steel Straw Tumbler

80ExcellentPFAS grade
  • Stainless steel interior, BPA-free plastic exterior
  • Plastic exterior off-gassing or additives

3 hazards checked on this product, all on its full breakdown.

S'well 40 oz Stainless Steel Traveler

S'well

40 oz Stainless Steel Traveler

80ExcellentPFAS grade
  • 18/8 stainless steel interior and exterior, plastic lid components
  • BPA & bisphenols

3 hazards checked on this product, all on its full breakdown.

  • stainless steel with no disclosed coating
  • We found no PFAS statement from the brand
  • Stainless steel corrosion and pitting

3 hazards checked on this product, all on its full breakdown.

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Stanley Everyday Tumbler

Stanley

Everyday Tumbler

70GoodPFAS grade
  • stainless steel, vacuum insulated
  • Silicone gasket and lid degradation

2 hazards checked on this product, all on its full breakdown.

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Stanley Quencher H2.0 Fluted Tumbler

Stanley

Quencher H2.0 Fluted Tumbler

70GoodPFAS grade
  • stainless steel, no known coating
  • Bacterial or mold growth in seals and crevices
Find an alternative on Amazon
Rambler Tumbler YETI

Yeti

Rambler Tumbler YETI

70GoodPFAS grade
  • 18/8 stainless steel, no coating
  • Nickel leaching from stainless steel
Hydro Flask 20-Ounce All Around Tumbler

Hydro Flask

20-Ounce All Around Tumbler

70GoodPFAS grade
  • stainless steel interior, vacuum-insulated
  • Lid/gasket material degradation
Find an alternative on Amazon
  • Stainless steel tumbler, no coating disclosed
  • We found no PFAS statement from the brand
  • BPA & bisphenols

2 hazards checked on this product, all on its full breakdown.

Find an alternative on Amazon
RTIC Essential Tumbler

RTIC

Essential Tumbler

70GoodPFAS grade
  • Stainless steel with double-wall vacuum insulation
  • We found no PFAS statement from the brand
  • Lid gasket/seal degradation

2 hazards checked on this product, all on its full breakdown.

Find an alternative on Amazon

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