65/ 100
D

PFAS score

Contigo Byron 2.0 Insulated Travel Mug

Contigo · Insulated Drink Tumblers & Travel Mugs

Contigo Byron 2.0 Insulated Travel Mug

D · Elevated

Lower concern. Stainless steel core unlikely to contain PFAS.

Insulated travel mug with stainless steel construction and plastic components. No PFAS claims or disclosures from brand; plastic lid material composition not detailed.

The safe swap

Rambler Tumbler YETI

Yeti

Rambler Tumbler YETI

80/100 safety

B

Still want this one anyway? Check the price on Amazon. We’d swap it.

Material

Stainless steel exterior, BPA-free plastic lid and interior

Brand disclosure

Brand is silent on PFAS

Lab data

No public lab test

Why this grade

Safe base material

Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).

Helps the grade

Category baseline

cookware is a category where PFAS exposure is more common.

Hurts the grade

No PFAS disclosure

No public statement about PFAS in this product.

Hurts the grade

What we don’t know

This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.

No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.

The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.

Formulations and coatings change between production runs. Always check the current label before buying.

Safer alternatives in Insulated Drink Tumblers & Travel Mugs

Rambler Tumbler YETI

Yeti

Rambler Tumbler YETI

18/8 stainless steel, no coating

B
C
PFASAll
B · Low PFAS1 flag

Lower concern. Bare stainless steel tumbler, no known PFAS risk.

Risky category by default

Contigo Autoseal West Loop Stainless Steel Travel Mug

Contigo

Autoseal West Loop Stainless Steel Travel Mug

stainless steel body, silicone gasket/lid seal

C
C
PFASAll
C · Moderate1 flag

Lower concern. Stainless steel and silicone have minimal PFAS risk.

Risky category by default

Contigo Cortland Chill 2.0 Stainless Steel Water Bottle

Contigo

Cortland Chill 2.0 Stainless Steel Water Bottle

stainless steel, no reported coating

C
F
PFASAll
C · Moderate3 flags

Lower PFAS concern. Bare stainless steel bottle, no known problematic coatings.

Risky category by default

More insulated drink tumblers & travel mugs grades

How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.