It is an old model or a product that we can no longer order at the manufacturer.
The Pocket Warmer Hand Warmers (Box of 5 pairs) are hand warmers developed by the brand Therm-Ic to provide you with a source of heat during your cold ski days. The Pocket Warmer Hand Warmers heat up upon contact with air and can be placed in your ski gloves, providing pleasant warmth for up to 8 hours straight.