The M size corresponds to the glove with a length of 33cm, a width of 13.5cm and a middle finger length of 9.7cm. Please choose according to your actual palm size The Heated Skiing Gloves provide a wide heating area covering your whole back of the hand and all fingers in case of poor blood circulation, arthritis, cold weather, or simply for more comfort and warmth. Unique five fingers and back of hand heating layout, rapid heating from fingertip to palm, threaded wiring design, soft and delicate, to prevent pullingthe index finger and thumb are made of composite materials to transmit human body sensing to the mobile phone screen through gloves, so that you can operate the mobile phone outdoors without taking off your gloves in cold winter Connect the battery with the connector in the glove, put the battery into the battery bag, zip up, long press the on key to start up, the default is the red high temperature key, gently press the on key to continue to adjust the gear, and there are three gear temperatures to choose from. Select the gear until the switch light is off The flexible heating fiber is combined with the inside of the glove to form a whole, which has good heating effect, effectively prevents heat loss, transmits more heat to the inside of the glove, and feels comfortable and not stiff Comprehensive waterproof treatment: the glove surface is made of water splash proof fabric, and the surface is waterproof while preventing wind. The zipper is coated with waterproof treatment, which has good waterproof effect, no tearing, good smoothness,flat and delicate surface, and has a smooth feeling similar to leather Note: This product does not contain battery or power bank