Footwarmer Insoles are designed to heat in the restricted air environment of a shoe or boot for up to 8 hours. Ideal for daily use in shoes, ski boots, or whenever feet are cold. Not intended for use in open air. 

The warmer is a soft, light-weight pouch containing iron powder, charcoal, salt, water and vermiculite. Peel back the adhesive backing and press warmer to outside of sock under foot for comfortable warmth. 

Sold in pairs.

Features & Benefits
• Generates heat for 8+ hours.
• Sold as pair only.
• Ultra thin design fits comfortably in any shoe.
• Adhesive backing to ensure warmers stay in place.