These warmers are activated when exposed to oxygen. To activate the warmer, shake it briefly and it will provide heat for up to 10 hours.
These warmers are adhesive and activate when exposed to oxygen. To activate the warmer, shake it briefly and it will provide heat for up to 10 hours.
These warmers are adhesive and activate when exposed to oxygen. To activate the warmer, shake it briefly and it will provide heat for up to 10 hours.