The Right Temperature: The Foot Warmers starts heating up in about 6 seconds after insertion and the heated insole reaches its maximum temperature 90F 120F within three minutes. Once the maximum temperature is reached it stays constant for about five hours allowing your feet to warm up quickly without feeling too hot or even sweaty.
Lasting and Efficient: The USB Rechargeable Heated Boot Insoles is made of imported high-efficiency composite carbon fiber heating wire which features high heating temperature rapid heating long service life folding resistance safety and reliability.
Ease Of Maintenance: Great polyester is incredibly durable and provides you with warmth and comfort. This Electric Heated Insoles is easy to wash hand wash and machine wash. Air drying is recommended to better protect the heating element.
Wide Application: This The Heating Insoles are great for all indoor outdoor activities like motorcycling hunting skiing snowboarding snowmobiling bicycling ice-fishing hiking walking the dogs hunting Snow Plowing mountaineering and more and more.
Size Information: There are two sizes for you to choose from one size 35 39 and one size 40 44. It can be trimmed to fit almost any shoe size and will fit easily into shoes or boots.