Koolpak Adhesive Foot Warmers Air Activated, 8 Hours Heat, Outdoor Use, Single 2 per pack

Air-activated – No batteries or charging needed, just open & use. Fast heating – Warms up quickly to keep feet cozy in cold conditions. Long-lasting warmth – Provides up to 8 hours of soothing heat. Easy to use – Simply stick to socks for targeted toe warmth. Ideal for outdoor use – Great for hiking, skiing & winter sports.