Open the packaging, remove the hand warmer and shake to activate. The content reacts with oxygen, therefore the development of warmth takes a few minutes. After this you can place them comfortably inside gloves, pockets or in your hands.

Features:

• 18 Hours of heat
• Ready to use
• Air activated
• Natural Heat
• Portable

Size: 5" x 3.75" (13 x 9.5 cm)

The temperature will range from 40°C to 70°C for up to 18 hours.