Air-activated therapeutic heat pad

Carry on baggage
Yes (<350ml)
Checked baggage
Yes

Air-activated therapeutic heat pad: Certain powders and granular materials in your carry-on are limited to a total quantity of 350 ml or less (roughly the size of a soda can). There are no exemptions for medical reasons.

Attention

Certain powders and granular materials may require additional screening, and in some cases, the items may not be permitted. We recommend that permitted powders and granular materials that are not required during your flight be placed in checked baggage.

Exemptions on baby food or formula, life-sustaining medication, and sacred or spiritual items may apply.