["Features:\nbrand new and high quality\nFor the field work, mountain camping, polar expeditions, winter tourism, skiing, fishing and other outdoor sports to provide warmth for protection.\nThis product can provide heat continuously to the body, with some relieving rheumatism and cold, has medicinal effects swelling pain. \nThin and long enough for keeping entire foot warm.\nClean and natural heat. React with air adequately is OK.\nIt will stay in shoes flatly.\nSafe to use. Friendly and natural materials without peculiar smell.\nCare of your feet with FOOT WARMER.\nHeating for time Lasting up to 8-10 hours, Average temperature ≥40°C.\nSuitable for the people who hates cold weather, dysmenorrhea along with cold feet.\n\nSpecification:\nHeating time: 8 hours\nAverage temperature: 52℃\nIngredients: iron powder, salt, activated carbon, water, etc.\nSIZE:9*7cm（for cm）\nColor: As pictures shown.\nQuantity: 5 pair(10pcs)\n\nNote:\n1. Product should affixed to the outside of socks, do not directly attached to the skin.\n2. Please be careful low-temperature burns.long-time body heat will produce erythema, blisters and other symptoms. Do not use it while sleeping at night. \n3. Pregnant women and diabetic patients and blocked the blood circulation is required to use under the guidance of a doctor. \n4. Children, the disabled or sensitive skin should use more attention in the low-temperature burns happen. \n5. Please keep products, to avoid plastic packaging products, vacuum bags injury or damage, or product will fail.\n6. Products in a dry, dark place to preserve.\n\nNote:\nTransition: 1cm=10mm=0.39inch\nNo retail package.\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n5 pair(10pcs)x Foot Warmer Sticker(other accessories demo in the picture is not included.)"]