BananaHome Heated Soles, Air-Activated Foot Warmers for Men Women, Up to 12 Hours of Heat 36-39（women）1 Pairs

Air-Activated & Easy-to-Use: Our foot warmers use air activation technology, requiring no batteries, or messy charging. Just expose them to the air for fast activation, perfect for impromptu outdoor activities or busy workdays where you need instant warmth. Stay Cozy & Comfortable: Our insole foot warmers use breathable non-woven materials and high-quality iron powder inside, odorless, uniform heat dissipation, no leakage. Provides a steady, comfortable warmth that lasts for up to 12 hours. Ultra-Thin Design: With a slim profile that fits seamlessly into any shoe without adding bulk, these insoles ensure that your existing footwear still provides a comfortable fit, making them great for boots, sneakers, or dress shoes. Portable Convenience: our hot insole warmers are lightweight and portable with the thickness of about 0.12 inch/ 3 mm, easy to carry , making them travel friendly in the winter; Whether you're starting an outdoor adventure or long journey, these warmers slip readily into any footwear and into your busy lifestyle Stay Warm Outdoors:Ideal for outdoor winter activities such as camping, hunting, hiking, fishing, winter golf, skiing, snowboarding, tailgating at sports events, and chilly soccer games to prevent frostbite. Don't let the cold weather stop you from enjoying your favorite outdoor activities!