| Footwarmer Insoles Footwarmer Insoles are designed to heat in the restricted air environment of a shoe or boot for up to 6 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.
Features & Benefits ? Generates heat for 6+ hours. ? Sold as pair only. ? Ultra thin design fits comfortably in any shoe. ? Adhesive backing to ensure warmers stay in place.
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