Beeswift N-Ferno Full Foot Warming PacksThese self contained foot warming packs provide soothing heat for the entire foot. Designed to fit comfortably inside shoes or boots, the packs activate when exposed to air, offering hours of warmth for cold environments. Ideal for workers in construction, logistics, and other outdoor or industrial settings. Key Features: To activate, simply open the pack. All natural ingredients heat up when they contact oxygen. Seal in a Zip Lok bag to prevent