Smart Heating Gloves Fabric name: artificial leather Material: black taishi langbo fabric, gray poplar fabric Heating film: imported composite wire, five fingers + back of hand heat Size: L Overall length 34 cm Palm size: 19-22 cm Middle finger: 8.5-9 cm Voltage: 4.5V Batteries: 3 AA batteries (not included) Application: Outdoor running, skiing, mountaineering, etc. Three temperature adjustment: blue 40-45, white 45-50, red 50-55 Advantages: Double waterproof, built-in outer waterproof layer waterproof pocket, keep gloves warm and comfortable Electronically heated winter gloves are perfect for cold weather activities. The carbon fiber heating element fits easily in the hand and heats up quickly and evenly over the hands and fingers. Built-in breathable membrane protects hands and harsh system conditions. Coating protects for incredible durability and the elements. Provides up to 8 hours of pleasant warmth in harsh winters