Silicone Insulated Travel Drinkware, ranked by PFAS safety

Ember

Cold Tumbler

stainless steel with silicone seal

A

A

PFASAll

Lower concern; stainless steel tumbler unlikely to contain PFAS.

✓Naturally PFAS-free material

Klean Kanteen

Rise Tumbler

18/8 stainless steel body, likely stainless steel or silicone lid

A

B

PFASAll

Lower concern. Stainless steel tumbler with no known PFAS coatings.

✓Naturally PFAS-free material

Cuppy

Asobu Superb Sippy

plastic/silicone sippy cup construction

B

F

PFASAll

Likely lower concern, but brand discloses no PFAS information.

⚠Brand says nothing about PFAS

Mira

MiiR 360 Traveler

Stainless steel tumbler with silicone grip

B

C

PFASAll

Lower concern, basic steel drinkware.

⚠Brand says nothing about PFAS

Corkcicle

Leakproof Cruiser Insulated Tumbler with Handle

Stainless steel body, silicone gasket

B

B

PFASAll

Lower concern. Stainless steel and silicone, no Teflon-family coating risk apparent.

⚠Brand says nothing about PFAS

Klean Kanteen

Insulated TKWide Cap

Stainless steel bottle, plastic cap and silicone gasket

B

C

PFASAll

Lower concern. Stainless steel core with no known PFAS-prone coatings.

⚠Brand says nothing about PFAS

Cuppy

Igloo 32 oz Flip n Sip Travel Mug

Polypropylene (PP) plastic with silicone seal

B

C

PFASAll

Lower concern; polypropylene travel mug unlikely PFAS source.

⚠Brand says nothing about PFAS

Cuppy

Owala SmoothSip Slider Stainless Steel

Stainless steel body, silicone slider lid

F

F

PFASAll

Lower concern. Stainless steel and silicone lack typical PFAS carriers.

⚠Stain-resistant finish