10pcs/20pcs Self-Warming Heaters, Winter Foot Warmer Pads, Period Heating Pads, Self-Adhesive Universal Body Warmer Patches, Long-Lasting Heat Pads, Independent Packaging To Keep Hands & Feet Warm, Warm Stickers, 40°C Heating For 8 Hours, Air Activated, Odorless, Natural Ingredients, Suitable For Home, Outdoor Activities, Office, School And More.