Heated Insoles sizes can be cut. There is a yardage cutting line on the sole surface, which can be cut to the desired size according to your needs, making it more fit and comfortable. You can give them to your husband, lover, or other loved ones at Halloween, Christmas, Carnival, birthdays, and Mother's Day. Specification: Product name: Heated Insoles Insole material: EVA Insole heel thickness: about 2CM/0.78IN Battery capacity: 3300mAh Ambient temperature: -5?Charging voltage: 5V Working temperature: 45? Charging method: USB charging Use time: 6-10 hours Button gear: three gear temperature control Input: Type-C 5V/1A Charging status: red light Fully charged state: green light Size: can be cut S (35-38 yards) M (39-42 yards) L (43-46 yards) Switching and pairing 1. Packing List: Heated Insoles1 pair Remote control1 USB cable1 Instruction manual1 Note: Due to different lighting and screen settings, item colors may vary slightly from the pictures. Due to the difference in manual measurement, please allow a 1-2cm difference in size. This item is in the category "Sporting Goods\Winter Sports\Skiing, Snowboarding & Snowshoeing\Accessories\Hand & Foot Warmers". The seller is "nartyen" and is located in this country: GB. This item can be shipped worldwide.