Points:1.【Durable Material】The latest high-efficiency carbon fiber , high density, safe and envmentally friendly, builtin safe 1900Mah lithium polymer battery, protected by a steel shell, high load-bearing2.【Three-stage Adjustment】2-3.5 hours in high-temperature mode (53°C-60°C), 3.5-5.5 hours in medium-temperature mode (48°C-52°C) - 5.5-9 hours in low-temperature-mode (40°C-°C)3.【Warming Effect】The heat preservation time varies depending on the envment, and the feet will not sweat in winter, wirele e control for maximum operator comfort4.【Can be Cut】This insole can be adjusted to your shoe size, ranging fro5-40 Euros and 41-46 Euros, it can be cut to fit and the sole trimmed to suit your needs5.【Versatile Use】The heated insole is perfect for activities like hunting, skiing, motorcycling, climbing, or walking, keeping you active and keeping your feet warm and comfortableDescribe:1. Safe and envmentally friendly materials, the latest high-efficiency carbon fiber , high density2. Builtin safe 1900Mah lithium polymer battery, circuit, and battery are protected by a steel case, high bearing capacity3. e control by wirele e control to maximize operating comfort4. Can be adjusted according to your shoe size, trim the sole to suit your needsSpecification:Charging Cable: TP-CVoltage:3.0V-4.2VBatterycapacity:Left:2100Mah,right:2100MahInput:AC/100-240V,40-60HZOutput:4.2V-5VServicelife:morethan0cyclesThe numberofcodes:Mcode:35-40EurocodeLcode:41-46EurocodePackingList:1PairofInsoles1*eControl1*ChargingCable1*Instruction