Features: Rapid heating: Heated foot insoles heats up quickly to High Temperature, which is very suitable for skiing adventure, outdoor work, hunting, fishing, running, cycling, Skiing,hiking, etc. Suitable for Winter outdoor and indoor activities, ensuring dexterity, comfort, and protecting your feet. Cut to the right size: This Thermal Insoles provides you with a trimable area with Multiple Sizes , Unisex,so you can customize them to get the perfect fit. Large capacity battery-cycling heating: 5V 5000mAh rechargeable lithium polymer battery Operated , cycle charging and heating to (40°C-50°C). Easy to Clean & Use:The thermal insoles uses polyester fiber material and can be washed directly, which is more convenient and clean. Specifications: Material: Polyester Fiber Styles: Thermostat: Insole + 1.5m USB Cable Power bank models: Insole + 1.5m USB Cable + Power Bank Size: 35 : Foot Length 225cm/88.58" Shoe Pad Length 230cm/90.55" 36 : Foot Length 230cm/90.55" Shoe Pad Length 235cm/92.51" 37 : Foot Length 235cm/92.51" Shoe Pad Length 240cm/94.48" 38 : Foot Length 240cm/94.48" Shoe Pad Length 245cm/96.45" 39 : Foot Length 245cm/96.45" Shoe Pad Length 250cm/98.42" 40 : Foot Length 250cm/98.42" Shoe Pad Length 255cm/100.39" 41 : Foot Length 255cm/100.39" Shoe Pad Length 260cm/102.36" 42 : Foot Length 260cm/102.36" Shoe Pad Length 265cm/104.33" 43 : Foot Length 265cm/104.33" Shoe Pad Length 270cm/106.29" 44 : Foot Length 270cm/106.29" Shoe Pad Length 275cm/108.26" Package Includes: 1 Pair of Shoe Pad note: Please allow 1-2cm errors due to manual measurement,Please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.