Hand warmers (air-activated)

Purpose

Restore dexterity to cold hands and add heat inside gloves, boots, or a blanket.

Used in kits

• Basic Vehicle Emergency Kit

  Vehicle

• Winter Car Kit

  Vehicle

• Bushcraft Fire Kit

  Bushcraft

Alternatives

• Rechargeable electric warmer— Reusable but useless once its battery is dead.

Maintenance notes

• Expire after 3–4 years; rotate vehicle stock each winter.

Buying considerations

• Buy by the case before winter; per-unit cost drops sharply.