HotHands® Adhesive Foot Insole Warmers are single-use air-activated heat packs that provide up to 9 hours of continuous warmth for your feet. Simply open the package, remove adhesive, stick to the bottom of your sock and slide into the bottom of your boots or close-toed shoes. HotHands® Adhesive Foot Insole Warmers are specifically designed for use inside a shoe or boot where oxygen is restricted. Do not trim or peel. 

Warmer Features:

• Ready to use
• Adhesive
• Odor absorbing activated charcoal
• Air activated
• Safe, natural heat
• Heats up 15-30 minutes after opening
• Safe to dispose of with regular garbage; ingredients will not harm the environment
• 16 pair per display
• TSA approved

Warmer Specifications: 

• Duration: Up To 9 Hours (actual duration depends on usage and storage conditions)
• Weight: 0.156 lbs (71 g)
• Size: One size fits most
• Dimensions: 4.31" x 9.75" (11 cm x 24.7 cm)
• Average Temperature: 99 °F (37 °C)
• Maximum Temperature: 109 °F (43 °C)
• Ingredients: Iron, water, cellulose, activated carbon and salt
• Country of Origin: Japan
• Harmonized Code: 3005.90.9900
• ECCN: EAR99
• MFG SKU: HFINSPDQ